Merge branch 'master' into reports

2024-12-22 09:19:59 +00:00 · 2017-05-29 16:20:48 +03:00 · 2017-05-29 16:20:48 +03:00 · bea63315cd
parent 9e656ff7f6 3059507e09
commit bea63315cd
23 changed files with 958 additions and 337 deletions
--- a/README.md
+++ b/README.md
@ -1,82 +1,110 @@
 # NyaaV2

-## Setup
+## Setting up for development
+This project uses Python 3.6. There are features used that do not exist in 3.5, so make sure to use Python 3.6.   
+This guide also assumes you 1) are using Linux and 2) are somewhat capable with the commandline.   
+It's not impossible to run Nyaa on Windows, but this guide doesn't focus on that.

+### Code Quality:
+- Before we get any deeper, remember to follow PEP8 style guidelines and run `./lint.sh` before committing.
+    - You may also use `pycodestyle nyaa/ --show-source --max-line-length=100´ to see a list of warnings/problems instead of having `lint.sh` making modifications for you
+- Other than PEP8, try to keep your code clean and easy to understand, as well. It's only polite!
+
+### Setting up Pyenv
+pyenv eases the use of different Python versions, and as not all Linux distros offer 3.6 packages, it's right up our alley.
 - Install dependencies https://github.com/pyenv/pyenv/wiki/Common-build-problems
 - Install `pyenv` https://github.com/pyenv/pyenv/blob/master/README.md#installation
 - Install `pyenv-virtualenv` https://github.com/pyenv/pyenv-virtualenv/blob/master/README.md
- `pyenv install 3.6.1`
- `pyenv virtualenv 3.6.1 nyaa`
- `pyenv activate nyaa`
+- Install Python 3.6.1 with `pyenv` and create a virtualenv for the project:
+    - `pyenv install 3.6.1`
+    - `pyenv virtualenv 3.6.1 nyaa`
+    - `pyenv activate nyaa`
 - Install dependencies with `pip install -r requirements.txt`
 - Copy `config.example.py` into `config.py`
- Change TABLE_PREFIX to `nyaa_` or `sukebei_` depending on the site
+    - Change `SITE_FLAVOR` in your `config.py` depending on which instance you want to host

-### Setting up MySQL/MariaDB database for advanced functionality
+### Setting up MySQL/MariaDB database
+You *may* use SQLite but the current support for it in this project is outdated and rather unsupported.
 - Enable `USE_MYSQL` flag in config.py
 - Install latest mariadb by following instructions here https://downloads.mariadb.org/mariadb/repositories/
    - Tested versions: `mysql  Ver 15.1 Distrib 10.0.30-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2`
- Run the following commands logged in as your root db user:
+- Run the following commands logged in as your root db user (substitute for your own `config.py` values if desired):
    - `CREATE USER 'test'@'localhost' IDENTIFIED BY 'test123';`
-    - `GRANT ALL PRIVILEGES ON * . * TO 'test'@'localhost';`
+    - `GRANT ALL PRIVILEGES ON *.* TO 'test'@'localhost';`
    - `FLUSH PRIVILEGES;`
    - `CREATE DATABASE nyaav2 DEFAULT CHARACTER SET utf8 COLLATE utf8_bin;`
- To setup and import nyaa_maria_vx.sql:
-    - `mysql -u <user> -p nyaav2`
-    - `DROP DATABASE nyaav2;`
-    - `CREATE DATABASE nyaav2 DEFAULT CHARACTER SET utf8 COLLATE utf8_bin;`
-    - `SOURCE ~/path/to/database/nyaa_maria_vx.sql`

 ### Finishing up
- Run `python db_create.py` to create the database
- Load the .sql file
-    - `mysql -u user -p nyaav2`
-    - `SOURCE cocks.sql`
-    - Remember to change the default user password to an empty string to disable logging in
+- Run `python db_create.py` to create the database and import categories
+    - Follow the advice of `db_create.py` and run `./db_migrate.py stamp head` to mark the database version for Alembic
 - Start the dev server with `python run.py`
- When you are finished developing, deactivate your virtualenv with `source deactivate`
+- When you are finished developing, deactivate your virtualenv with `pyenv deactivate` or `source deactivate` (or just close your shell session)

-## Enabling ElasticSearch
+You're now ready for simple testing and development!   
+Continue below to learn about database migrations and enabling the advanced search engine, Elasticsearch.

-### Basics
- Install jdk `sudo apt-get install openjdk-8-jdk`
- Install elasticsearch https://www.elastic.co/guide/en/elasticsearch/reference/current/deb.html
- `sudo systemctl enable elasticsearch.service`
- `sudo systemctl start elasticsearch.service`
- Run `curl -XGET 'localhost:9200'` and make sure ES is running
- Optional: install Kabana as a search frontend for ES
-
-### Enable MySQL Binlogging
- Add the `[mariadb]` bin-log section to my.cnf and reload mysql server
- Connect to mysql
- `SHOW VARIABLES LIKE 'binlog_format';`
-    - Make sure it shows ROW
- Connect to root user
- `GRANT REPLICATION SLAVE ON *.* TO 'test'@'localhost';` where test is the user you will be running `sync_es.py` with
-
-### Setting up ES
- Run `./create_es.sh` and this creates two indicies: `nyaa` and `sukebei`
- The output should show `acknowledged: true` twice
- The safest bet is to disable the webapp here to ensure there's no database writes
- Run `python import_to_es.py` with `SITE_FLAVOR` set to `nyaa`
- Run `python import_to_es.py` with `SITE_FLAVOR` set to `sukebei`
- These will take some time to run as it's indexing
-
-### Setting up sync_es.py
- Sync_es.py keeps the ElasticSearch index updated by reading the BinLog
- Configure the MySQL options with the user where you granted the REPLICATION permissions
- Connect to MySQL, run `SHOW MASTER STATUS;`.
- Copy the output to `/var/lib/sync_es_position.json` with the contents `{"log_file": "FILE", "log_pos": POSITION}` and replace FILENAME with File (something like master1-bin.000002) in the SQL output and POSITION (something like 892528513) with Position
- Set up `sync_es.py` as a service and run it, preferably as the system/root
- Make sure `sync_es.py` runs within venv with the right dependencies
-
-Enable the `USE_ELASTIC_SEARCH` flag in `config.py`, restart the application, and you're good to go.

 ## Database migrations
- Uses [flask-Migrate](https://flask-migrate.readthedocs.io/)
- Run `./db_migrate.py db migrate` to generate the migration script after database model changes.
- Take a look at the result in `migrations/versions/...` to make sure nothing went wrong.
- Run `./db_migrate.py db upgrade` to upgrade your database.
+- Database migrations are done with [flask-Migrate](https://flask-migrate.readthedocs.io/), a wrapper around [Alembic](http://alembic.zzzcomputing.com/en/latest/).
+- If someone has made changes in the database schema and included a new migration script:
+    - If your database has never been marked by Alembic (you're on a database from before the migrations), run `./db_migrate.py stamp head` before pulling the new migration script(s).
+        - If you already have the new scripts, check the output of `./db_migrate.py history` instead and choose a hash that matches your current database state, then run `./db_migrate.py stamp <hash>`.
+    - Update your branch (eg. `git fetch && git rebase origin/master`)
+    - Run `./db_migrate.py upgrade head` to run the migration. Done!
+- If *you* have made a change in the database schema:
+    - Save your changes in `models.py` and ensure the database schema matches the previous version (ie. your new tables/columns are not added to the live database)
+    - Run `./db_migrate.py migrate -m "Short description of changes"` to automatically generate a migration script for the changes
+      - Check the script (`migrations/versions/...`) and make sure it works! Alembic may not able to notice all changes.
+    - Run `./db_migrate.py upgrade` to run the migration and verify the upgrade works.
+       - (Run `./db_migrate.py downgrade` to verify the downgrade works as well, then upgrade again)

-## Code Quality:
- Remember to follow PEP8 style guidelines and run `./lint.sh` before committing.
+
+## Setting up and enabling Elasticsearch
+
+### Installing Elasticsearch
+- Install JDK with `sudo apt-get install openjdk-8-jdk`
+- Install [Elasticsearch](https://www.elastic.co/downloads/elasticsearch)
+    - [From packages...](https://www.elastic.co/guide/en/elasticsearch/reference/current/deb.html)
+        - Enable the service:
+            - `sudo systemctl enable elasticsearch.service`
+            - `sudo systemctl start elasticsearch.service`
+    - or [simply extracting the archives and running the files](https://www.elastic.co/guide/en/elasticsearch/reference/current/_installation.html), if you don't feel like permantently installing ES
+- Run `curl -XGET 'localhost:9200'` and make sure ES is running
+    - Optional: install [Kibana](https://www.elastic.co/products/kibana) as a search debug frontend for ES
+
+### Setting up ES
+- Run `./create_es.sh` to create the indices for the torrents: `nyaa` and `sukebei`
+    - The output should show `acknowledged: true` twice
+- Stop the Nyaa app if you haven't already
+- Run `python import_to_es.py` to import all the torrents (on nyaa and sukebei) into the ES indices.
+    - This may take some time to run if you have plenty of torrents in your database.
+
+Enable the `USE_ELASTIC_SEARCH` flag in `config.py` and (re)start the application.   
+Elasticsearch should now be functional! The ES indices won't be updated "live" with the current setup, continue below for instructions on how to hook Elasticsearch up to MySQL binlog.   
+
+However, take note that binglog is not necessary for simple ES testing and development; you can simply run `import_to_es.py` from time to time to reindex all the torrents.
+
+### Enabling MySQL Binlogging
+- Edit your MariaDB/MySQL server configuration and add the following under `[mariadb]`:
+    ```
+    log-bin
+    server_id=1
+    log-basename=master1
+    binlog-format=row
+    ```
+- Restart MariaDB/MySQL (`sudo service mysql restart`)
+- Copy the example configuration (`es_sync_config.example.json`) as `es_sync_config.json` and adjust options in it to your liking (verify the connection options!)
+- Connect to mysql as root
+    - Verify that the result of `SHOW VARIABLES LIKE 'binlog_format';` is `ROW`
+    - Execute `GRANT REPLICATION SLAVE ON *.* TO 'username'@'localhost';` to allow your configured user access to the binlog
+
+
+### Setting up sync_es.py
+`sync_es.py` keeps the Elasticsearch indices updated by reading the binlog and pushing the changes to the ES indices.
+- Make sure `es_sync_config.json` is configured with the user you grated the `REPLICATION` permissions
+- Run `import_to_es.py` and copy the outputted JSON into the file specified by `save_loc` in your `es_sync_config.json`
+- Run `sync_es.py` as-is *or*, for actual deployment, set it up as a service and run it, preferably as the system/root
+    - Make sure `sync_es.py` runs within the venv with the right dependencies!
+
+You're done! The script should now be feeding updates from the database to Elasticsearch.   
+Take note, however, that the specified ES index refresh interval is 30 seconds, which may feel like a long time on local development. Feel free to adjust it or [poke Elasticsearch yourself!](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-refresh.html)
--- a/config.example.py
+++ b/config.example.py
@ -7,7 +7,7 @@ USE_EMAIL_VERIFICATION = False
 USE_MYSQL = True

 # Enable this once stat integration is done
-ENABLE_SHOW_STATS = False
+ENABLE_SHOW_STATS = True

 BASE_DIR = os.path.abspath(os.path.dirname(__file__))
 if USE_MYSQL:
@ -21,7 +21,6 @@ SECRET_KEY = '***'

 # Prefix for running multiple sites, user table will not be prefixed.
 SITE_FLAVOR = 'nyaa' # 'nyaa' or 'sukebei'
-TABLE_PREFIX = SITE_FLAVOR + '_'

 # for recaptcha and email verification:
 # keys for localhost. Change as appropriate when actual domain is registered.
@ -33,16 +32,16 @@ MAIL_FROM_ADDRESS = '***'
 SMTP_USERNAME = '***'
 SMTP_PASSWORD = '***'

-# What the site identifies itself as.
+# What the site identifies itself as. This affects templates, not database stuff.
 SITE_NAME = 'Nyaa'

 # The maximum number of files a torrent can contain
 # until the site says "Too many files to display."
 MAX_FILES_VIEW = 1000

-# """
+#
 # Setting to make sure main announce url is present in torrent
-# """
+#
 ENFORCE_MAIN_ANNOUNCE_URL = False
 MAIN_ANNOUNCE_URL = ''

@ -51,10 +50,11 @@ BACKUP_TORRENT_FOLDER = 'torrents'
 #
 # Search Options
 #
-# Max ES search results, do not set over 10000
 RESULTS_PER_PAGE = 75

+# See README.MD on Elasticsearch setup
 USE_ELASTIC_SEARCH = False
 ENABLE_ELASTIC_SEARCH_HIGHLIGHT = False
+# Max ES search results, do not set over 10000
 ES_MAX_SEARCH_RESULT = 1000
 ES_INDEX_NAME = SITE_FLAVOR  # we create indicies named nyaa or sukebei
--- a/config_es_sync.json
+++ b/config_es_sync.json
@ -1,11 +0,0 @@
-{
-"save_loc": "/tmp/pos.json",
-"mysql_host": "127.0.0.1",
-"mysql_port": 13306,
-"mysql_user": "root",
-"mysql_password": "dunnolol",
-"database": "nyaav2",
-"internal_queue_depth": 10000,
-"es_chunk_size": 10000,
-"flush_interval": 5
-}
--- a/db_create.py
+++ b/db_create.py
@ -1,35 +1,60 @@
+#!/usr/bin/env python3
 import sys
+import sqlalchemy
 from nyaa import app, db, models

-# Create tables
+NYAA_CATEGORIES = [
+    ('Anime', ['Anime Music Video', 'English-translated', 'Non-English-translated', 'Raw']),
+    ('Audio', ['Lossless', 'Lossy']),
+    ('Literature', ['English-translated', 'Non-English-translated', 'Raw']),
+    ('Live Action', ['English-translated', 'Idol/Promotional Video', 'Non-English-translated', 'Raw']),
+    ('Pictures', ['Graphics', 'Photos']),
+    ('Software', ['Applications', 'Games']),
+]

-db.create_all()

-# Insert categories and insert if it doesn't eixst
-existing_cats = models.MainCategory.query.all()
-if not existing_cats:
-    if app.config['SITE_FLAVOR'] == 'nyaa':
-        CATEGORIES = [
-            ('Anime', ['Anime Music Video', 'English-translated', 'Non-English-translated', 'Raw']),
-            ('Audio', ['Lossless', 'Lossy']),
-            ('Literature', ['English-translated', 'Non-English-translated', 'Raw']),
-            ('Live Action', ['English-translated', 'Idol/Promotional Video', 'Non-English-translated', 'Raw']),
-            ('Pictures', ['Graphics', 'Photos']),
-            ('Software', ['Applications', 'Games']),
-        ]
-    elif app.config['SITE_FLAVOR'] == 'sukebei':
-        CATEGORIES = [
-            ('Art', ['Anime', 'Doujinshi', 'Games', 'Manga', 'Pictures']),
-            ('Real Life', ['Photobooks / Pictures', 'Videos']),
-        ]
-    else:
-        CATEGORIES = []
+SUKEBEI_CATEGORIES = [
+    ('Art', ['Anime', 'Doujinshi', 'Games', 'Manga', 'Pictures']),
+    ('Real Life', ['Photobooks / Pictures', 'Videos']),
+]

-    for main_cat_name, sub_cat_names in CATEGORIES:
-        main_cat = models.MainCategory(name=main_cat_name)
+
+def add_categories(categories, main_class, sub_class):
+    for main_cat_name, sub_cat_names in categories:
+        main_cat = main_class(name=main_cat_name)
        for i, sub_cat_name in enumerate(sub_cat_names):
            # Composite keys can't autoincrement, set sub_cat id manually (1-index)
-            sub_cat = models.SubCategory(id=i+1, name=sub_cat_name, main_category=main_cat)
+            sub_cat = sub_class(id=i+1, name=sub_cat_name, main_category=main_cat)
        db.session.add(main_cat)

+
+if __name__ == '__main__':
+    # Test for the user table, assume db is empty if it's not created
+    database_empty = False
+    try:
+        models.User.query.first()
+    except (sqlalchemy.exc.ProgrammingError, sqlalchemy.exc.OperationalError):
+        database_empty = True
+
+
+    print('Creating all tables...')
+    db.create_all()
+
+
+    nyaa_category_test = models.NyaaMainCategory.query.first()
+    if not nyaa_category_test:
+        print('Adding Nyaa categories...')
+        add_categories(NYAA_CATEGORIES, models.NyaaMainCategory, models.NyaaSubCategory)
+
+    sukebei_category_test = models.SukebeiMainCategory.query.first()
+    if not sukebei_category_test:
+        print('Adding Sukebei categories...')
+        add_categories(SUKEBEI_CATEGORIES, models.SukebeiMainCategory, models.SukebeiSubCategory)
+
    db.session.commit()
+
+    if database_empty:
+        print('Remember to run the following to mark the database up-to-date for Alembic:')
+        print('./db_migrate.py stamp head')
+        # Technically we should be able to do this here, but when you have
+        # Flask-Migrate and Flask-SQA and everything... I didn't get it working.
--- a/db_migrate.py
+++ b/db_migrate.py
@ -1,5 +1,6 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
+import sys
 from nyaa import app, db
 from flask_script import Manager
 from flask_migrate import Migrate, MigrateCommand
@ -10,4 +11,7 @@ manager = Manager(app)
 manager.add_command("db", MigrateCommand)

 if __name__ == "__main__":
+	# Patch sys.argv to default to 'db'
+	sys.argv.insert(1, 'db')
+
 	manager.run()
--- a/es_mapping.yml
+++ b/es_mapping.yml
@ -91,6 +91,8 @@ mappings:
        type: long
      seed_count:
        type: long
+      comment_count:
+        type: long
      # these ids are really only for filtering, thus keyword
      uploader_id:
        type: keyword
--- a/es_sync_config.example.json
+++ b/es_sync_config.example.json
@ -0,0 +1,11 @@
+{
+    "save_loc": "/tmp/pos.json",
+    "mysql_host": "127.0.0.1",
+    "mysql_port": 3306,
+    "mysql_user": "nyaa",
+    "mysql_password": "some_password",
+    "database": "nyaav2",
+    "internal_queue_depth": 10000,
+    "es_chunk_size": 10000,
+    "flush_interval": 5
+}
--- a/import_to_es.py
+++ b/import_to_es.py
@ -5,22 +5,16 @@ which is assumed to already exist.
 This is a one-shot deal, so you'd either need to complement it
 with a cron job or some binlog-reading thing (TODO)
 """
-from nyaa import app
-from nyaa.models import Torrent
+import sys
+import json
+from nyaa import app, db, models
+
 from elasticsearch import Elasticsearch
 from elasticsearch.client import IndicesClient
 from elasticsearch import helpers
-import progressbar
-import sys

-bar = progressbar.ProgressBar(
-        max_value=Torrent.query.count(),
-        widgets=[
-            progressbar.SimpleProgress(),
-            ' [', progressbar.Timer(), '] ',
-            progressbar.Bar(),
-            ' (', progressbar.ETA(), ') ',
-            ])
+# This should be progressbar33
+import progressbar

 es = Elasticsearch(timeout=30)
 ic = IndicesClient(es)
@ -32,11 +26,11 @@ ic = IndicesClient(es)
 # we don't want to reindex all the user's torrents just because they
 # changed their name, and we don't really want to FTS search on the user anyway.
 # Maybe it's more convenient to derefence though.
-def mk_es(t):
+def mk_es(t, index_name):
    return {
        "_id": t.id,
        "_type": "torrent",
-        "_index": app.config['ES_INDEX_NAME'],
+        "_index": index_name,
        "_source": {
            # we're also indexing the id as a number so you can
            # order by it. seems like this is just equivalent to
@ -51,6 +45,7 @@ def mk_es(t):
            "uploader_id": t.uploader_id,
            "main_category_id": t.main_category_id,
            "sub_category_id": t.sub_category_id,
+            "comment_count": t.comment_count,
            # XXX all the bitflags are numbers
            "anonymous": bool(t.anonymous),
            "trusted": bool(t.trusted),
@ -72,7 +67,7 @@ def mk_es(t):
 # page through an sqlalchemy query, like the per_fetch but
 # doesn't break the eager joins its doing against the stats table.
 # annoying that this isn't built in somehow.
-def page_query(query, limit=sys.maxsize, batch_size=10000):
+def page_query(query, limit=sys.maxsize, batch_size=10000, progress_bar=None):
    start = 0
    while True:
        # XXX very inelegant way to do this, i'm confus
@ -88,13 +83,46 @@ def page_query(query, limit=sys.maxsize, batch_size=10000):
            yield(thing)
        if not had_things or stop == limit:
            break
-        bar.update(start)
+        if progress_bar:
+            progress_bar.update(start)
        start = min(limit, start + batch_size)

-# turn off refreshes while bulk loading
-ic.put_settings(body={'index': {'refresh_interval': '-1'}}, index=app.config['ES_INDEX_NAME'])
+FLAVORS = [
+    ('nyaa', models.NyaaTorrent),
+    ('sukebei', models.SukebeiTorrent)
+]

-helpers.bulk(es, (mk_es(t) for t in page_query(Torrent.query)), chunk_size=10000)
+# Get binlog status from mysql
+master_status = db.engine.execute('SHOW MASTER STATUS;').fetchone()

-# restore to near-enough real time
-ic.put_settings(body={'index': {'refresh_interval': '30s'}}, index=app.config['ES_INDEX_NAME'])
+position_json = {
+    'log_file': master_status[0], 
+    'log_pos': master_status[1]
+}
+
+print('Save the following in the file configured in your ES sync config JSON:')
+print(json.dumps(position_json))
+
+for flavor, torrent_class in FLAVORS:
+    print('Importing torrents for index', flavor, 'from', torrent_class)
+    bar = progressbar.ProgressBar(
+        maxval=torrent_class.query.count(),
+        widgets=[ progressbar.SimpleProgress(),
+                  ' [', progressbar.Timer(), '] ',
+                  progressbar.Bar(),
+                  ' (', progressbar.ETA(), ') ',
+            ])
+
+    # turn off refreshes while bulk loading
+    ic.put_settings(body={'index': {'refresh_interval': '-1'}}, index=flavor)
+
+    bar.start()
+    helpers.bulk(es, (mk_es(t, flavor) for t in page_query(torrent_class.query, progress_bar=bar)), chunk_size=10000)
+    bar.finish()
+
+    # Refresh the index immideately
+    ic.refresh(index=flavor)
+    print('Index refresh done.')
+
+    # restore to near-enough real time
+    ic.put_settings(body={'index': {'refresh_interval': '30s'}}, index=flavor)
--- a/migrations/versions/2bceb2cb4d7c_add_comment_count_to_torrent.py
+++ b/migrations/versions/2bceb2cb4d7c_add_comment_count_to_torrent.py
@ -0,0 +1,52 @@
+"""Add comment_count to Torrent
+
+Revision ID: 2bceb2cb4d7c
+Revises: d0eeb8049623
+Create Date: 2017-05-26 15:07:21.114331
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '2bceb2cb4d7c'
+down_revision = 'd0eeb8049623'
+branch_labels = None
+depends_on = None
+
+COMMENT_UPDATE_SQL = '''UPDATE {0}_torrents
+                        SET comment_count = (
+                            SELECT COUNT(*) FROM {0}_comments
+                            WHERE {0}_torrents.id = {0}_comments.torrent_id
+                        );'''
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('nyaa_torrents', sa.Column('comment_count', sa.Integer(), nullable=False))
+    op.create_index(op.f('ix_nyaa_torrents_comment_count'), 'nyaa_torrents', ['comment_count'], unique=False)
+
+    op.add_column('sukebei_torrents', sa.Column('comment_count', sa.Integer(), nullable=False))
+    op.create_index(op.f('ix_sukebei_torrents_comment_count'), 'sukebei_torrents', ['comment_count'], unique=False)
+    # ### end Alembic commands ###
+
+    connection = op.get_bind()
+
+    print('Updating comment counts on nyaa_torrents...')
+    connection.execute(sa.sql.text(COMMENT_UPDATE_SQL.format('nyaa')))
+    print('Done.')
+
+    print('Updating comment counts on sukebei_torrents...')
+    connection.execute(sa.sql.text(COMMENT_UPDATE_SQL.format('sukebei')))
+    print('Done.')
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_nyaa_torrents_comment_count'), table_name='nyaa_torrents')
+    op.drop_column('nyaa_torrents', 'comment_count')
+
+    op.drop_index(op.f('ix_sukebei_torrents_comment_count'), table_name='sukebei_torrents')
+    op.drop_column('sukebei_torrents', 'comment_count')
+    # ### end Alembic commands ###
--- a/migrations/versions/3001f79b7722_add_torrents.uploader_ip.py
+++ b/migrations/versions/3001f79b7722_add_torrents.uploader_ip.py
@ -11,20 +11,19 @@ import sqlalchemy as sa

 # revision identifiers, used by Alembic.
 revision = '3001f79b7722'
-down_revision = None
+down_revision = '97ddefed1834'
 branch_labels = None
 depends_on = None

+TABLE_PREFIXES = ('nyaa', 'sukebei')
+

 def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column('nyaa_torrents', sa.Column('uploader_ip', sa.Binary(), nullable=True))
-    op.add_column('sukebei_torrents', sa.Column('uploader_ip', sa.Binary(), nullable=True))
-    # ### end Alembic commands ###
+    for prefix in TABLE_PREFIXES:
+        op.add_column(prefix + '_torrents', sa.Column('uploader_ip', sa.Binary(), nullable=True))
+        # ### end Alembic commands ###


 def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_column('nyaa_torrents', 'uploader_ip')
-    op.drop_column('sukebei_torrents', 'uploader_ip')
-    # ### end Alembic commands ###
+    for prefix in TABLE_PREFIXES:
+        op.drop_column(prefix + '_torrents', 'uploader_ip')
--- a/migrations/versions/97ddefed1834_initial_database_state.py
+++ b/migrations/versions/97ddefed1834_initial_database_state.py
@ -0,0 +1,166 @@
+"""Initial database state
+
+Revision ID: 97ddefed1834
+Revises: 
+Create Date: 2017-05-26 18:46:14.440040
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlalchemy_utils
+from sqlalchemy.dialects import mysql
+
+# revision identifiers, used by Alembic.
+revision = '97ddefed1834'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+TABLE_PREFIXES = ('nyaa', 'sukebei')
+
+def upgrade():
+    # Shared tables
+    op.create_table('users',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('username', sa.String(length=32, collation='ascii_general_ci'), nullable=False),
+        sa.Column('email', sqlalchemy_utils.types.email.EmailType(length=255), nullable=True),
+        
+        # These are actually PasswordType, UserStatusType and UserLevelType,
+        # but database-wise binary and integers are what's being used
+        sa.Column('password_hash', sa.Binary(length=255), nullable=False),
+        sa.Column('status', sa.Integer(), nullable=False),
+        sa.Column('level', sa.Integer(), nullable=False),
+
+        sa.Column('created_time', sa.DateTime(), nullable=True),
+        sa.Column('last_login_date', sa.DateTime(), nullable=True),
+        sa.Column('last_login_ip', sa.Binary(), nullable=True),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('email'),
+        sa.UniqueConstraint('username')
+    )
+
+    op.create_table('trackers',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('uri', sa.String(length=255, collation='utf8_general_ci'), nullable=False),
+        sa.Column('disabled', sa.Boolean(), nullable=False),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('uri')
+    )
+
+    # Nyaa and Sukebei
+    for prefix in TABLE_PREFIXES:
+        # Main categories
+        op.create_table(prefix + '_main_categories',
+            sa.Column('id', sa.Integer(), nullable=False),
+            sa.Column('name', sa.String(length=64), nullable=False),
+            sa.PrimaryKeyConstraint('id')
+        )
+        # Sub categories
+        op.create_table(prefix + '_sub_categories',
+            sa.Column('id', sa.Integer(), nullable=False),
+            sa.Column('main_category_id', sa.Integer(), nullable=False),
+            sa.Column('name', sa.String(length=64), nullable=False),
+            sa.ForeignKeyConstraint(['main_category_id'], [prefix + '_main_categories.id'], ),
+            sa.PrimaryKeyConstraint('id', 'main_category_id')
+        )
+        # Main torrent table
+        op.create_table(prefix + '_torrents',
+            sa.Column('id', sa.Integer(), nullable=False),
+            sa.Column('info_hash', sa.BINARY(length=20), nullable=False),
+            sa.Column('display_name', sa.String(length=255, collation='utf8_general_ci'), nullable=False),
+            sa.Column('torrent_name', sa.String(length=255), nullable=False),
+            sa.Column('information', sa.String(length=255), nullable=False),
+            sa.Column('description', mysql.TEXT(collation='utf8mb4_bin'), nullable=False),
+            sa.Column('filesize', sa.BIGINT(), nullable=False),
+            sa.Column('encoding', sa.String(length=32), nullable=False),
+            sa.Column('flags', sa.Integer(), nullable=False),
+            sa.Column('uploader_id', sa.Integer(), nullable=True),
+            sa.Column('has_torrent', sa.Boolean(), nullable=False),
+            sa.Column('created_time', sa.DateTime(), nullable=False),
+            sa.Column('updated_time', sa.DateTime(), nullable=False),
+            sa.Column('main_category_id', sa.Integer(), nullable=False),
+            sa.Column('sub_category_id', sa.Integer(), nullable=False),
+            sa.Column('redirect', sa.Integer(), nullable=True),
+            sa.ForeignKeyConstraint(['main_category_id', 'sub_category_id'], [prefix + '_sub_categories.main_category_id', prefix + '_sub_categories.id'], ),
+            sa.ForeignKeyConstraint(['main_category_id'], [prefix + '_main_categories.id'], ),
+            sa.ForeignKeyConstraint(['redirect'], [prefix + '_torrents.id'], ),
+            sa.ForeignKeyConstraint(['uploader_id'], ['users.id'], ),
+            sa.PrimaryKeyConstraint('id')
+        )
+        op.create_index(op.f('ix_' + prefix + '_torrents_display_name'), prefix + '_torrents', ['display_name'], unique=False)
+        op.create_index(op.f('ix_' + prefix + '_torrents_filesize'), prefix + '_torrents', ['filesize'], unique=False)
+        op.create_index(op.f('ix_' + prefix + '_torrents_flags'), prefix + '_torrents', ['flags'], unique=False)
+        op.create_index(op.f('ix_' + prefix + '_torrents_info_hash'), prefix + '_torrents', ['info_hash'], unique=True)
+        op.create_index(prefix + '_uploader_flag_idx', prefix + '_torrents', ['uploader_id', 'flags'], unique=False)
+        
+        # Statistics for torrents
+        op.create_table(prefix + '_statistics',
+            sa.Column('torrent_id', sa.Integer(), nullable=False),
+            sa.Column('seed_count', sa.Integer(), nullable=False),
+            sa.Column('leech_count', sa.Integer(), nullable=False),
+            sa.Column('download_count', sa.Integer(), nullable=False),
+            sa.Column('last_updated', sa.DateTime(), nullable=True),
+            sa.ForeignKeyConstraint(['torrent_id'], [prefix + '_torrents.id'], ondelete='CASCADE'),
+            sa.PrimaryKeyConstraint('torrent_id')
+        )
+        op.create_index(op.f('ix_' + prefix + '_statistics_download_count'), prefix + '_statistics', ['download_count'], unique=False)
+        op.create_index(op.f('ix_' + prefix + '_statistics_leech_count'), prefix + '_statistics', ['leech_count'], unique=False)
+        op.create_index(op.f('ix_' + prefix + '_statistics_seed_count'), prefix + '_statistics', ['seed_count'], unique=False)
+        
+        # Trackers relationships for torrents
+        op.create_table(prefix + '_torrent_trackers',
+            sa.Column('torrent_id', sa.Integer(), nullable=False),
+            sa.Column('tracker_id', sa.Integer(), nullable=False),
+            sa.Column('order', sa.Integer(), nullable=False),
+            sa.ForeignKeyConstraint(['torrent_id'], [prefix + '_torrents.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['tracker_id'], ['trackers.id'], ondelete='CASCADE'),
+            sa.PrimaryKeyConstraint('torrent_id', 'tracker_id')
+        )
+        op.create_index(op.f('ix_' + prefix + '_torrent_trackers_order'), prefix + '_torrent_trackers', ['order'], unique=False)
+        
+        # Torrent filelists
+        op.create_table(prefix + '_torrents_filelist',
+            sa.Column('torrent_id', sa.Integer(), nullable=False),
+            sa.Column('filelist_blob', mysql.MEDIUMBLOB(), nullable=True),
+            sa.ForeignKeyConstraint(['torrent_id'], [prefix + '_torrents.id'], ondelete='CASCADE'),
+            sa.PrimaryKeyConstraint('torrent_id'),
+            mysql_row_format='COMPRESSED'
+        )
+        
+        # Torrent info_dicts
+        op.create_table(prefix + '_torrents_info',
+            sa.Column('torrent_id', sa.Integer(), nullable=False),
+            sa.Column('info_dict', mysql.MEDIUMBLOB(), nullable=True),
+            sa.ForeignKeyConstraint(['torrent_id'], [prefix + '_torrents.id'], ondelete='CASCADE'),
+            sa.PrimaryKeyConstraint('torrent_id'),
+            mysql_row_format='COMPRESSED'
+        )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # Note: this may fail. It's better to just drop all tables instead (or reset the database)
+    
+    # Nyaa and Sukebei
+    for prefix in TABLE_PREFIXES:
+        op.drop_table(prefix + '_torrents_info')
+        op.drop_table(prefix + '_torrents_filelist')
+        op.drop_index(op.f('ix_' + prefix + '_torrent_trackers_order'), table_name=prefix + '_torrent_trackers')
+        op.drop_table(prefix + '_torrent_trackers')
+        op.drop_index(op.f('ix_' + prefix + '_statistics_seed_count'), table_name=prefix + '_statistics')
+        op.drop_index(op.f('ix_' + prefix + '_statistics_leech_count'), table_name=prefix + '_statistics')
+        op.drop_index(op.f('ix_' + prefix + '_statistics_download_count'), table_name=prefix + '_statistics')
+        op.drop_table(prefix + '_statistics')
+        op.drop_table(prefix + '_torrents')
+        op.drop_index(prefix + '_uploader_flag_idx', table_name=prefix + '_torrents')
+        op.drop_index(op.f('ix_' + prefix + '_torrents_info_hash'), table_name=prefix + '_torrents')
+        op.drop_index(op.f('ix_' + prefix + '_torrents_flags'), table_name=prefix + '_torrents')
+        op.drop_index(op.f('ix_' + prefix + '_torrents_filesize'), table_name=prefix + '_torrents')
+        op.drop_index(op.f('ix_' + prefix + '_torrents_display_name'), table_name=prefix + '_torrents')
+        op.drop_table(prefix + '_sub_categories')
+        op.drop_table(prefix + '_main_categories')
+
+    # Shared tables
+    op.drop_table('users')
+    op.drop_table('trackers')
+    # ### end Alembic commands ###
--- a/migrations/versions/d0eeb8049623_add_comments.py
+++ b/migrations/versions/d0eeb8049623_add_comments.py
@ -15,34 +15,23 @@ down_revision = '3001f79b7722'
 branch_labels = None
 depends_on = None

+TABLE_PREFIXES = ('nyaa', 'sukebei')
+

 def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.create_table('nyaa_comments',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('torrent_id', sa.Integer(), nullable=False),
-    sa.Column('user_id', sa.Integer(), nullable=True),
-    sa.Column('created_time', sa.DateTime(), nullable=True),
-    sa.Column('text', sa.String(length=255, collation='utf8mb4_bin'), nullable=False),
-    sa.ForeignKeyConstraint(['torrent_id'], ['nyaa_torrents.id'], ondelete='CASCADE'),
-    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
-    sa.PrimaryKeyConstraint('id')
-    )
-    op.create_table('sukebei_comments',
-    sa.Column('id', sa.Integer(), nullable=False),
-    sa.Column('torrent_id', sa.Integer(), nullable=False),
-    sa.Column('user_id', sa.Integer(), nullable=True),
-    sa.Column('created_time', sa.DateTime(), nullable=True),
-    sa.Column('text', sa.String(length=255, collation='utf8mb4_bin'), nullable=False),
-    sa.ForeignKeyConstraint(['torrent_id'], ['sukebei_torrents.id'], ondelete='CASCADE'),
-    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
-    sa.PrimaryKeyConstraint('id')
-    )
-    # ### end Alembic commands ###
+    for prefix in TABLE_PREFIXES:
+        op.create_table(prefix + '_comments',
+            sa.Column('id', sa.Integer(), nullable=False),
+            sa.Column('torrent_id', sa.Integer(), nullable=False),
+            sa.Column('user_id', sa.Integer(), nullable=True),
+            sa.Column('created_time', sa.DateTime(), nullable=True),
+            sa.Column('text', sa.String(length=255, collation='utf8mb4_bin'), nullable=False),
+            sa.ForeignKeyConstraint(['torrent_id'], [prefix + '_torrents.id'], ondelete='CASCADE'),
+            sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
+            sa.PrimaryKeyConstraint('id')
+        )


 def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_table('nyaa_comments')
-    op.drop_table('sukebei_comments')
-    # ### end Alembic commands ###
+    for prefix in TABLE_PREFIXES:
+        op.drop_table(prefix + '_comments')
--- a/nyaa/init.py
+++ b/nyaa/init.py
@ -22,6 +22,15 @@ if app.config['DEBUG']:
    app.config['DEBUG_TB_INTERCEPT_REDIRECTS'] = False
    toolbar = DebugToolbarExtension(app)
    app.logger.setLevel(logging.DEBUG)
+
+    # Forbid caching
+    @app.after_request
+    def forbid_cache(request):
+        request.headers['Cache-Control'] = 'no-cache, no-store, must-revalidate, max-age=0'
+        request.headers['Pragma'] = 'no-cache'
+        request.headers['Expires'] = '0'
+        return request
+
 else:
    app.logger.setLevel(logging.WARNING)

--- a/nyaa/forms.py
+++ b/nyaa/forms.py
@ -43,7 +43,7 @@ _username_validator = Regexp(


 class LoginForm(FlaskForm):
-    username = StringField('Username or email address', [DataRequired(), _username_validator])
+    username = StringField('Username or email address', [DataRequired()])
    password = PasswordField('Password', [DataRequired()])


--- a/nyaa/models.py
+++ b/nyaa/models.py
@ -3,10 +3,13 @@ from enum import Enum, IntEnum
 from datetime import datetime, timezone
 from nyaa import app, db
 from nyaa.torrents import create_magnet
+
 from sqlalchemy import func, ForeignKeyConstraint, Index
+from sqlalchemy.ext import declarative
 from sqlalchemy_utils import ChoiceType, EmailType, PasswordType
-from werkzeug.security import generate_password_hash, check_password_hash
 from sqlalchemy_fulltext import FullText
+
+from werkzeug.security import generate_password_hash, check_password_hash
 from ipaddress import ip_address

 import re
@ -17,7 +20,6 @@ from hashlib import md5

 if app.config['USE_MYSQL']:
    from sqlalchemy.dialects import mysql
-
    BinaryType = mysql.BINARY
    DescriptionTextType = mysql.TEXT
    MediumBlobType = mysql.MEDIUMBLOB
@ -32,10 +34,36 @@ else:
    COL_UTF8MB4_BIN = None
    COL_ASCII_GENERAL_CI = 'NOCASE'

+
 # For property timestamps
 UTC_EPOCH = datetime.utcfromtimestamp(0)


+class DeclarativeHelperBase(object):
+    ''' This class eases our nyaa-sukebei shenanigans by automatically adjusting
+        __tablename__ and providing class methods for renaming references. '''
+    # See http://docs.sqlalchemy.org/en/latest/orm/extensions/declarative/api.html
+
+    __tablename_base__ = None
+    __flavor__ = None
+
+    @classmethod
+    def _table_prefix_string(cls):
+        return cls.__flavor__.lower() + '_'
+
+    @classmethod
+    def _table_prefix(cls, table_name):
+        return cls._table_prefix_string() + table_name
+
+    @classmethod
+    def _flavor_prefix(cls, table_name):
+        return cls.__flavor__ + table_name
+
+    @declarative.declared_attr
+    def __tablename__(cls):
+        return cls._table_prefix(cls.__tablename_base__)
+
+
 class TorrentFlags(IntEnum):
    NONE = 0
    ANONYMOUS = 1
@ -46,16 +74,13 @@ class TorrentFlags(IntEnum):
    DELETED = 32


-DB_TABLE_PREFIX = app.config['TABLE_PREFIX']
-
-
-class Torrent(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'torrents'
+class TorrentBase(DeclarativeHelperBase):
+    __tablename_base__ = 'torrents'

    id = db.Column(db.Integer, primary_key=True)
    info_hash = db.Column(BinaryType(length=20), unique=True, nullable=False, index=True)
-    display_name = db.Column(
-        db.String(length=255, collation=COL_UTF8_GENERAL_CI), nullable=False, index=True)
+    display_name = db.Column(db.String(length=255, collation=COL_UTF8_GENERAL_CI),
+                             nullable=False, index=True)
    torrent_name = db.Column(db.String(length=255), nullable=False)
    information = db.Column(db.String(length=255), nullable=False)
    description = db.Column(DescriptionTextType(collation=COL_UTF8MB4_BIN), nullable=False)
@ -63,50 +88,95 @@ class Torrent(db.Model):
    filesize = db.Column(db.BIGINT, default=0, nullable=False, index=True)
    encoding = db.Column(db.String(length=32), nullable=False)
    flags = db.Column(db.Integer, default=0, nullable=False, index=True)
-    uploader_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
+
+    @declarative.declared_attr
+    def uploader_id(cls):
+        # Even though this is same for both tables, declarative requires this
+        return db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
+
    uploader_ip = db.Column(db.Binary(length=16), default=None, nullable=True)
    has_torrent = db.Column(db.Boolean, nullable=False, default=False)

+    comment_count = db.Column(db.Integer, default=0, nullable=False, index=True)
+
    created_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow, nullable=False)
-    updated_time = db.Column(db.DateTime(timezone=False),
-                             default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    updated_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow,
+                             onupdate=datetime.utcnow, nullable=False)
+
+    @declarative.declared_attr
+    def main_category_id(cls):
+        fk = db.ForeignKey(cls._table_prefix('main_categories.id'))
+        return db.Column(db.Integer, fk, nullable=False)

-    main_category_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'main_categories.id'), nullable=False)
    sub_category_id = db.Column(db.Integer, nullable=False)
-    redirect = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id'), nullable=True)

-    __table_args__ = (
-        Index('uploader_flag_idx', 'uploader_id', 'flags'),
-        ForeignKeyConstraint(
-            ['main_category_id', 'sub_category_id'],
-            [DB_TABLE_PREFIX + 'sub_categories.main_category_id',
-                DB_TABLE_PREFIX + 'sub_categories.id']
-        ), {}
-    )
+    @declarative.declared_attr
+    def redirect(cls):
+        fk = db.ForeignKey(cls._table_prefix('torrents.id'))
+        return db.Column(db.Integer, fk, nullable=True)

-    user = db.relationship('User', uselist=False, back_populates='torrents')
-    main_category = db.relationship('MainCategory', uselist=False,
-                                    back_populates='torrents', lazy="joined")
-    sub_category = db.relationship('SubCategory', uselist=False, backref='torrents', lazy="joined",
-                                   primaryjoin=(
-                                       "and_(SubCategory.id == foreign(Torrent.sub_category_id), "
-                                       "SubCategory.main_category_id == Torrent.main_category_id)"))
-    info = db.relationship('TorrentInfo', uselist=False,
-                           cascade="all, delete-orphan", back_populates='torrent')
-    filelist = db.relationship('TorrentFilelist', uselist=False,
+    @declarative.declared_attr
+    def __table_args__(cls):
+        return (
+                Index(cls._table_prefix('uploader_flag_idx'), 'uploader_id', 'flags'),
+                ForeignKeyConstraint(
+                    ['main_category_id', 'sub_category_id'],
+                    [cls._table_prefix('sub_categories.main_category_id'),
+                        cls._table_prefix('sub_categories.id')]
+                ), {}
+            )
+
+    @declarative.declared_attr
+    def user(cls):
+        return db.relationship('User', uselist=False, back_populates=cls._table_prefix('torrents'))
+
+    @declarative.declared_attr
+    def main_category(cls):
+        return db.relationship(cls._flavor_prefix('MainCategory'), uselist=False,
+                               back_populates='torrents', lazy="joined")
+
+    @declarative.declared_attr
+    def sub_category(cls):
+        join_sql = ("and_({0}SubCategory.id == foreign({0}Torrent.sub_category_id), "
+                    "{0}SubCategory.main_category_id == {0}Torrent.main_category_id)")
+        return db.relationship(cls._flavor_prefix('SubCategory'), uselist=False,
+                               backref='torrents', lazy="joined",
+                               primaryjoin=join_sql.format(cls.__flavor__))
+
+    @declarative.declared_attr
+    def info(cls):
+        return db.relationship(cls._flavor_prefix('TorrentInfo'), uselist=False,
                               cascade="all, delete-orphan", back_populates='torrent')
-    stats = db.relationship('Statistic', uselist=False,
-                            cascade="all, delete-orphan", back_populates='torrent', lazy='joined')
-    trackers = db.relationship('TorrentTrackers', uselist=True, cascade="all, delete-orphan",
-                               lazy='joined', order_by='TorrentTrackers.order')
-    comments = db.relationship('Comment', uselist=True,
+
+    @declarative.declared_attr
+    def filelist(cls):
+        return db.relationship(cls._flavor_prefix('TorrentFilelist'), uselist=False,
+                               cascade="all, delete-orphan", back_populates='torrent')
+
+    @declarative.declared_attr
+    def stats(cls):
+        return db.relationship(cls._flavor_prefix('Statistic'), uselist=False,
+                               cascade="all, delete-orphan", back_populates='torrent',
+                               lazy='joined')
+
+    @declarative.declared_attr
+    def trackers(cls):
+        return db.relationship(cls._flavor_prefix('TorrentTrackers'), uselist=True,
+                               cascade="all, delete-orphan", lazy='joined',
+                               order_by=cls._flavor_prefix('TorrentTrackers.order'))
+
+    @declarative.declared_attr
+    def comments(cls):
+        return db.relationship(cls._flavor_prefix('Comment'), uselist=True,
                               cascade="all, delete-orphan")

    def __repr__(self):
        return '<{0} #{1.id} \'{1.display_name}\' {1.filesize}b>'.format(type(self).__name__, self)

+    def update_comment_count(self):
+        self.comment_count = Comment.query.filter_by(torrent_id=self.id).count()
+        return self.comment_count
+
    @property
    def created_utc_timestamp(self):
        ''' Returns a UTC POSIX timestamp, as seconds '''
@ -149,6 +219,8 @@ class Torrent(db.Model):
        if self.uploader_ip:
            return str(ip_address(self.uploader_ip))

+    # Flag getters and setters below
+
    @property
    def anonymous(self):
        return self.flags & TorrentFlags.ANONYMOUS
@ -197,6 +269,8 @@ class Torrent(db.Model):
    def complete(self, value):
        self.flags = (self.flags & ~TorrentFlags.COMPLETE) | (value and TorrentFlags.COMPLETE)

+    # Class methods
+
    @classmethod
    def by_id(cls, id):
        return cls.query.get(id)
@ -211,44 +285,57 @@ class Torrent(db.Model):
        return cls.by_info_hash(info_hash_bytes)


-class TorrentNameSearch(FullText, Torrent):
-    __fulltext_columns__ = ('display_name',)
+class TorrentFilelistBase(DeclarativeHelperBase):
+    __tablename_base__ = 'torrents_filelist'

-
-class TorrentFilelist(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'torrents_filelist'
    __table_args__ = {'mysql_row_format': 'COMPRESSED'}

-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
+    @declarative.declared_attr
+    def torrent_id(cls):
+        fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
+        return db.Column(db.Integer, fk, primary_key=True)
+
    filelist_blob = db.Column(MediumBlobType, nullable=True)

-    torrent = db.relationship('Torrent', uselist=False, back_populates='filelist')
+    @declarative.declared_attr
+    def torrent(cls):
+        return db.relationship(cls._flavor_prefix('Torrent'), uselist=False,
+                               back_populates='filelist')


-class TorrentInfo(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'torrents_info'
+class TorrentInfoBase(DeclarativeHelperBase):
+    __tablename_base__ = 'torrents_info'
+
    __table_args__ = {'mysql_row_format': 'COMPRESSED'}

-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
+    @declarative.declared_attr
+    def torrent_id(cls):
+        return db.Column(db.Integer, db.ForeignKey(
+            cls._table_prefix('torrents.id'), ondelete="CASCADE"), primary_key=True)
    info_dict = db.Column(MediumBlobType, nullable=True)

-    torrent = db.relationship('Torrent', uselist=False, back_populates='info')
+    @declarative.declared_attr
+    def torrent(cls):
+        return db.relationship(cls._flavor_prefix('Torrent'), uselist=False, back_populates='info')


-class Statistic(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'statistics'
+class StatisticBase(DeclarativeHelperBase):
+    __tablename_base__ = 'statistics'

-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
+    @declarative.declared_attr
+    def torrent_id(cls):
+        fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
+        return db.Column(db.Integer, fk, primary_key=True)

    seed_count = db.Column(db.Integer, default=0, nullable=False, index=True)
    leech_count = db.Column(db.Integer, default=0, nullable=False, index=True)
    download_count = db.Column(db.Integer, default=0, nullable=False, index=True)
    last_updated = db.Column(db.DateTime(timezone=False))

-    torrent = db.relationship('Torrent', uselist=False, back_populates='stats')
+    @declarative.declared_attr
+    def torrent(cls):
+        return db.relationship(cls._flavor_prefix('Torrent'), uselist=False,
+                               back_populates='stats')


 class Trackers(db.Model):
@ -264,30 +351,43 @@ class Trackers(db.Model):
        return cls.query.filter_by(uri=uri).first()


-class TorrentTrackers(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'torrent_trackers'
+class TorrentTrackersBase(DeclarativeHelperBase):
+    __tablename_base__ = 'torrent_trackers'
+
+    @declarative.declared_attr
+    def torrent_id(cls):
+        fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
+        return db.Column(db.Integer, fk, primary_key=True)
+
+    @declarative.declared_attr
+    def tracker_id(cls):
+        fk = db.ForeignKey('trackers.id', ondelete="CASCADE")
+        return db.Column(db.Integer, fk, primary_key=True)

-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
-    tracker_id = db.Column(db.Integer, db.ForeignKey(
-        'trackers.id', ondelete="CASCADE"), primary_key=True)
    order = db.Column(db.Integer, nullable=False, index=True)

-    tracker = db.relationship('Trackers', uselist=False, lazy='joined')
+    @declarative.declared_attr
+    def tracker(cls):
+        return db.relationship('Trackers', uselist=False, lazy='joined')

    @classmethod
    def by_torrent_id(cls, torrent_id):
        return cls.query.filter_by(torrent_id=torrent_id).order_by(cls.order.desc())


-class MainCategory(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'main_categories'
+class MainCategoryBase(DeclarativeHelperBase):
+    __tablename_base__ = 'main_categories'

    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(length=64), nullable=False)

-    sub_categories = db.relationship('SubCategory', back_populates='main_category')
-    torrents = db.relationship('Torrent', back_populates='main_category')
+    @declarative.declared_attr
+    def sub_categories(cls):
+        return db.relationship(cls._flavor_prefix('SubCategory'), back_populates='main_category')
+
+    @declarative.declared_attr
+    def torrents(cls):
+        return db.relationship(cls._flavor_prefix('Torrent'), back_populates='main_category')

    def get_category_ids(self):
        return (self.id, 0)
@ -301,18 +401,22 @@ class MainCategory(db.Model):
        return cls.query.get(id)


-class SubCategory(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'sub_categories'
+class SubCategoryBase(DeclarativeHelperBase):
+    __tablename_base__ = 'sub_categories'

    id = db.Column(db.Integer, primary_key=True)
-    main_category_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'main_categories.id'), primary_key=True)
+
+    @declarative.declared_attr
+    def main_category_id(cls):
+        fk = db.ForeignKey(cls._table_prefix('main_categories.id'))
+        return db.Column(db.Integer, fk, primary_key=True)
+
    name = db.Column(db.String(length=64), nullable=False)

-    main_category = db.relationship('MainCategory', uselist=False, back_populates='sub_categories')
-#    torrents = db.relationship('Torrent', back_populates='sub_category'),
-#        primaryjoin="and_(Torrent.sub_category_id == foreign(SubCategory.id), "
-#                    "Torrent.main_category_id == SubCategory.main_category_id)")
+    @declarative.declared_attr
+    def main_category(cls):
+        return db.relationship(cls._flavor_prefix('MainCategory'), uselist=False,
+                               back_populates='sub_categories')

    def get_category_ids(self):
        return (self.main_category_id, self.id)
@ -326,17 +430,27 @@ class SubCategory(db.Model):
        return cls.query.get((sub_cat_id, main_cat_id))


-class Comment(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'comments'
+class CommentBase(DeclarativeHelperBase):
+    __tablename_base__ = 'comments'

    id = db.Column(db.Integer, primary_key=True)
-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete='CASCADE'), nullable=False)
-    user_id = db.Column(db.Integer, db.ForeignKey('users.id', ondelete='CASCADE'))
+
+    @declarative.declared_attr
+    def torrent_id(cls):
+        return db.Column(db.Integer, db.ForeignKey(
+                cls._table_prefix('torrents.id'), ondelete='CASCADE'), nullable=False)
+
+    @declarative.declared_attr
+    def user_id(cls):
+        return db.Column(db.Integer, db.ForeignKey('users.id', ondelete='CASCADE'))
+
    created_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow)
    text = db.Column(db.String(length=255, collation=COL_UTF8MB4_BIN), nullable=False)

-    user = db.relationship('User', uselist=False, back_populates='comments', lazy="joined")
+    @declarative.declared_attr
+    def user(cls):
+        return db.relationship('User', uselist=False,
+                               back_populates=cls._table_prefix('comments'), lazy="joined")

    def __repr__(self):
        return '<Comment %r>' % self.id
@ -376,9 +490,11 @@ class User(db.Model):
    last_login_date = db.Column(db.DateTime(timezone=False), default=None, nullable=True)
    last_login_ip = db.Column(db.Binary(length=16), default=None, nullable=True)

-    torrents = db.relationship('Torrent', back_populates='user', lazy='dynamic')
-    comments = db.relationship('Comment', back_populates='user', lazy='dynamic')
-    # session = db.relationship('Session', uselist=False, back_populates='user')
+    nyaa_torrents = db.relationship('NyaaTorrent', back_populates='user', lazy='dynamic')
+    nyaa_comments = db.relationship('NyaaComment', back_populates='user', lazy='dynamic')
+
+    sukebei_torrents = db.relationship('SukebeiTorrent', back_populates='user', lazy='dynamic')
+    sukebei_comments = db.relationship('SukebeiComment', back_populates='user', lazy='dynamic')

    def __init__(self, username, email, password):
        self.username = username
@ -470,20 +586,30 @@ class ReportStatus(IntEnum):
    INVALID = 2


-class Report(db.Model):
-    __tablename__ = DB_TABLE_PREFIX + 'reports'
+class ReportBase(DeclarativeHelperBase):
+    __tablename_base__ = 'reports'

    id = db.Column(db.Integer, primary_key=True)
-    torrent_id = db.Column(db.Integer, db.ForeignKey(
-        DB_TABLE_PREFIX + 'torrents.id', ondelete='CASCADE'))
-    user_id = db.Column(db.Integer, db.ForeignKey(
-        'users.id'))
    created_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow)
    reason = db.Column(db.String(length=255), nullable=False)
    status = db.Column(ChoiceType(ReportStatus, impl=db.Integer()), nullable=False)

-    user = db.relationship('User', uselist=False, lazy="joined")
-    torrent = db.relationship('Torrent', uselist=False, lazy="joined")
+    @declarative.declared_attr
+    def torrent_id(cls):
+        return db.Column(db.Integer, db.ForeignKey(
+            cls._table_prefix('torrents.id'), ondelete='CASCADE'), nullable=False)
+
+    @declarative.declared_attr
+    def user_id(cls):
+        return db.Column(db.Integer, db.ForeignKey('users.id'))
+
+    @declarative.declared_attr
+    def user(cls):
+        return db.relationship('User', uselist=False, lazy="joined")
+
+    @declarative.declared_attr
+    def torrent(cls):
+        return db.relationship(cls._flavor_prefix('Torrent'), uselist=False, lazy="joined")

    def __init__(self, torrent_id, user_id, reason):
        self.torrent_id = torrent_id
@ -512,12 +638,130 @@ class Report(db.Model):
    def remove_reviewed(cls, id):
        return cls.query.filter(cls.torrent_id == id, cls.status == 0).delete()

-# class Session(db.Model):
-#    __tablename__ = 'sessions'
-#
-#    session_id = db.Column(db.Integer, primary_key=True)
-#    user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
-#    login_ip = db.Column(db.Binary(length=16), nullable=True)
-#    login_date = db.Column(db.DateTime(timezone=False), nullable=True)
-#
-#    user = db.relationship('User', back_populates='session')
+        
+# Actually declare our site-specific classes
+
+# Torrent
+class NyaaTorrent(TorrentBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiTorrent(TorrentBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# Fulltext models for MySQL
+if app.config['USE_MYSQL']:
+    class NyaaTorrentNameSearch(FullText, NyaaTorrent):
+        __fulltext_columns__ = ('display_name',)
+        __table_args__ = {'extend_existing': True}
+
+    class SukebeiTorrentNameSearch(FullText, SukebeiTorrent):
+        __fulltext_columns__ = ('display_name',)
+        __table_args__ = {'extend_existing': True}
+else:
+    # Bogus classes for Sqlite
+    class NyaaTorrentNameSearch(object):
+        pass
+
+    class SukebeiTorrentNameSearch(object):
+        pass
+
+
+# TorrentFilelist
+class NyaaTorrentFilelist(TorrentFilelistBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiTorrentFilelist(TorrentFilelistBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# TorrentInfo
+class NyaaTorrentInfo(TorrentInfoBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiTorrentInfo(TorrentInfoBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# Statistic
+class NyaaStatistic(StatisticBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiStatistic(StatisticBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# TorrentTrackers
+class NyaaTorrentTrackers(TorrentTrackersBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiTorrentTrackers(TorrentTrackersBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# MainCategory
+class NyaaMainCategory(MainCategoryBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiMainCategory(MainCategoryBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# SubCategory
+class NyaaSubCategory(SubCategoryBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiSubCategory(SubCategoryBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# Comment
+class NyaaComment(CommentBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiComment(CommentBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# Report
+class NyaaReport(ReportBase, db.Model):
+    __flavor__ = 'Nyaa'
+
+
+class SukebeiReport(ReportBase, db.Model):
+    __flavor__ = 'Sukebei'
+
+
+# Choose our defaults for models.Torrent etc
+if app.config['SITE_FLAVOR'] == 'nyaa':
+    Torrent = NyaaTorrent
+    TorrentFilelist = NyaaTorrentFilelist
+    TorrentInfo = NyaaTorrentInfo
+    Statistic = NyaaStatistic
+    TorrentTrackers = NyaaTorrentTrackers
+    MainCategory = NyaaMainCategory
+    SubCategory = NyaaSubCategory
+    Comment = NyaaComment
+    Report = NyaaReport
+
+    TorrentNameSearch = NyaaTorrentNameSearch
+elif app.config['SITE_FLAVOR'] == 'sukebei':
+    Torrent = SukebeiTorrent
+    TorrentFilelist = SukebeiTorrentFilelist
+    TorrentInfo = SukebeiTorrentInfo
+    Statistic = SukebeiStatistic
+    TorrentTrackers = SukebeiTorrentTrackers
+    MainCategory = SukebeiMainCategory
+    SubCategory = SukebeiSubCategory
+    Comment = SukebeiComment
+    Report = SukebeiReport
+
+    TorrentNameSearch = SukebeiTorrentNameSearch
--- a/nyaa/routes.py
+++ b/nyaa/routes.py
@ -51,7 +51,7 @@ def redirect_url():


@app.template_global()
-def static_cachebuster(static_filename):
+def static_cachebuster(filename):
    ''' Adds a ?t=<mtime> cachebuster to the given path, if the file exists.
        Results are cached in memory and persist until app restart! '''
    # Instead of timestamps, we could use commit hashes (we already load it in __init__)
@ -60,19 +60,18 @@ def static_cachebuster(static_filename):

    if app.debug:
        # Do not bust cache on debug (helps debugging)
-        return static_filename
+        return flask.url_for('static', filename=filename)

    # Get file mtime if not already cached.
-    if static_filename not in _static_cache:
-        file_path = os.path.join(app.config['BASE_DIR'], 'nyaa', static_filename[1:])
+    if filename not in _static_cache:
+        file_path = os.path.join(app.static_folder, filename)
+        file_mtime = None
        if os.path.exists(file_path):
            file_mtime = int(os.path.getmtime(file_path))
-            _static_cache[static_filename] = static_filename + '?t=' + str(file_mtime)
-        else:
-            # Throw a warning?
-            _static_cache[static_filename] = static_filename

-    return _static_cache[static_filename]
+        _static_cache[filename] = file_mtime
+
+    return flask.url_for('static', filename=filename, t=_static_cache[filename])


@app.template_global()
@ -657,9 +656,10 @@ def view_torrent(torrent_id):
                text=comment_text)

            db.session.add(comment)
-            db.session.commit()
+            db.session.flush()

-            torrent_count = models.Comment.query.filter_by(torrent_id=torrent.id).count()
+            torrent_count = torrent.update_comment_count()
+            db.session.commit()

            flask.flash('Comment successfully posted.', 'success')

@ -687,6 +687,9 @@ def view_torrent(torrent_id):
 def delete_comment(torrent_id, comment_id):
    if not flask.g.user:
        flask.abort(403)
+    torrent = models.Torrent.by_id(torrent_id)
+    if not torrent:
+        flask.abort(404)

    comment = models.Comment.query.filter_by(id=comment_id).first()
    if not comment:
@ -696,6 +699,8 @@ def delete_comment(torrent_id, comment_id):
        flask.abort(403)

    db.session.delete(comment)
+    db.session.flush()
+    torrent.update_comment_count()
    db.session.commit()

    flask.flash('Comment successfully deleted.', 'success')
--- a/nyaa/search.py
+++ b/nyaa/search.py
@ -25,6 +25,7 @@ def search_elastic(term='', user=None, sort='id', order='desc',
        'id': 'id',
        'size': 'filesize',
        # 'name': 'display_name',  # This is slow and buggy
+        'comments': 'comment_count',
        'seeders': 'seed_count',
        'leechers': 'leech_count',
        'downloads': 'download_count'
@ -190,6 +191,7 @@ def search_db(term='', user=None, sort='id', order='desc', category='0_0',
        'size': models.Torrent.filesize,
        # Disable this because we disabled this in search_elastic, for the sake of consistency:
        # 'name': models.Torrent.display_name,
+        'comments': models.Torrent.comment_count,
        'seeders': models.Statistic.seed_count,
        'leechers': models.Statistic.leech_count,
        'downloads': models.Statistic.download_count
--- a/nyaa/static/css/main.css
+++ b/nyaa/static/css/main.css
@ -62,6 +62,30 @@ table.torrent-list tbody tr td a:visited {
 	color: #1d4568;
 }

+/* comments count */
+table.torrent-list .hdr-comments {
+	border-left: hidden;
+	font-size: medium;
+}
+
+table.torrent-list .hdr-comments i {
+	margin-right: 6px;
+}
+
+table.torrent-list tbody .comments {
+	position: relative;
+	float: right;
+	border: 1px solid #d7d7d7;
+	border-radius: 3px;
+	color: #383838;
+	padding: 0 5px;
+	font-size: small;
+	background-color: #ffffff;
+}
+table.torrent-list tbody .comments i {
+	padding-right: 2px;
+}
+
 #torrent-description img {
 	max-width: 100%;
 }
--- a/nyaa/templates/layout.html
+++ b/nyaa/templates/layout.html
@ -6,9 +6,9 @@

 		<meta name="viewport" content="width=device-width">
 		<meta http-equiv="X-UA-Compatible" content="IE=edge">
-		<link rel="shortcut icon" type="image/png" href="/static/favicon.png">
-		<link rel="icon" type="image/png" href="/static/favicon.png">
-		<link rel="mask-icon" href="/static/pinned-tab.svg" color="#3582F7">
+		<link rel="shortcut icon" type="image/png" href="{{ url_for('static', filename='favicon.png') }}">
+		<link rel="icon" type="image/png" href="{{ url_for('static', filename='favicon.png') }}">
+		<link rel="mask-icon" href="{{ url_for('static', filename='pinned-tab.svg') }}" color="#3582F7">
 		<link rel="alternate" type="application/rss+xml" href="{% if rss_filter %}{{ url_for('home', page='rss', _external=True, **rss_filter) }}{% else %}{{ url_for('home', page='rss', _external=True) }}{% endif %}" />

 		<meta property="og:site_name" content="{{ config.SITE_NAME }}">
@ -25,10 +25,10 @@
 			make the navbar not look awful on tablets.
 		-->
 		{# These are extracted here for the dark mode toggle #}
-		{% set bootstrap_light = static_cachebuster('/static/css/bootstrap.min.css') %}
-		{% set bootstrap_dark = static_cachebuster('/static/css/bootstrap-dark.min.css') %}
+		{% set bootstrap_light = static_cachebuster('css/bootstrap.min.css') %}
+		{% set bootstrap_dark = static_cachebuster('css/bootstrap-dark.min.css') %}
 		<link href="{{ bootstrap_light }}" rel="stylesheet" id="bsThemeLink">
-		<link href="{{ static_cachebuster('/static/css/bootstrap-xl-mod.css') }}" rel="stylesheet">
+		<link href="{{ static_cachebuster('css/bootstrap-xl-mod.css') }}" rel="stylesheet">
 		<!--
 			This theme changer script needs to be inline and right under the above stylesheet link to prevent FOUC (Flash Of Unstyled Content)
 			Development version is commented out in static/js/main.js at the bottom of the file
@ -38,15 +38,15 @@
 		<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" integrity="sha256-eZrrJcwDc/3uDhsdt61sL2oOBY362qM3lon1gyExkL0=" crossorigin="anonymous" />

 		<!-- Custom styles for this template -->
-		<link href="{{ static_cachebuster('/static/css/main.css') }}" rel="stylesheet">
+		<link href="{{ static_cachebuster('css/main.css') }}" rel="stylesheet">

 		<!-- Core JavaScript -->
 		<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js" integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4=" crossorigin="anonymous"></script>
 		<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha256-U5ZEeKfGNOja007MMD3YBI0A3OSZOQbeG6z2f2Y0hu8=" crossorigin="anonymous"></script>
 		<script src="https://cdnjs.cloudflare.com/ajax/libs/commonmark/0.27.0/commonmark.min.js" integrity="sha256-10JreQhQG80GtKuzsioj0K46DlaB/CK/EG+NuG0q97E=" crossorigin="anonymous"></script>
 		<!-- Modified to not apply border-radius to selectpickers and stuff so our navbar looks cool -->
-		<script src="{{ static_cachebuster('/static/js/bootstrap-select.js') }}"></script>
-		<script src="{{ static_cachebuster('/static/js/main.js') }}"></script>
+		<script src="{{ static_cachebuster('js/bootstrap-select.js') }}"></script>
+		<script src="{{ static_cachebuster('js/main.js') }}"></script>

 		<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
 		<!--[if lt IE 9]>
@ -65,21 +65,21 @@
 					<span class="icon-bar"></span>
 					<span class="icon-bar"></span>
 					</button>
-					<a class="navbar-brand" href="/">{{ config.SITE_NAME }}</a>
+					<a class="navbar-brand" href="{{ url_for('home') }}">{{ config.SITE_NAME }}</a>
 				</div>
 				{% set search_username = (user.username + ("'" if user.username[-1] == 's' else "'s")) if user_page else None %}
 				{% set search_placeholder = 'Search {} torrents...'.format(search_username) if user_page else 'Search...' %}
 				<div id="navbar" class="navbar-collapse collapse">
 					<ul class="nav navbar-nav">
-						<li {% if request.path == "/upload" %} class="active"{% endif %}><a href="/upload">Upload</a></li>
+						<li {% if request.path == url_for('upload') %}class="active"{% endif %}><a href="{{ url_for('upload') }}">Upload</a></li>
 						<li class="dropdown">
 							<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
 								About
 								<span class="caret"></span>
 							</a>
 							<ul class="dropdown-menu">
-								<li {% if request.path == "/rules" %} class="active"{% endif %}><a href="/rules">Rules</a></li>
-								<li {% if request.path == "/help" %} class="active"{% endif %}><a href="/help">Help</a></li>
+								<li {% if request.path == url_for('site_rules') %}class="active"{% endif %}><a href="{{ url_for('site_rules') }}">Rules</a></li>
+								<li {% if request.path == url_for('site_help') %}class="active"{% endif %}><a href="{{ url_for('site_help') }}">Help</a></li>
 							</ul>
 						</li>
 						<li><a href="{% if rss_filter %}{{ url_for('home', page='rss', **rss_filter) }}{% else %}{{ url_for('home', page='rss') }}{% endif %}">RSS</a></li>
@ -119,13 +119,13 @@
 									</a>
 								</li>
 								<li>
-									<a href="/profile">
+									<a href="{{ url_for('profile') }}">
 										<i class="fa fa-gear fa-fw"></i>
 										Profile
 									</a>
 								</li>
 								<li>
-									<a href="/logout">
+									<a href="{{ url_for('logout') }}">
 										<i class="fa fa-times fa-fw"></i>
 										Logout
 									</a>
@ -145,13 +145,13 @@
 							</a>
 							<ul class="dropdown-menu">
 								<li>
-									<a href="/login">
+									<a href="{{ url_for('login') }}">
 										<i class="fa fa-sign-in fa-fw"></i>
 										Login
 									</a>
 								</li>
 								<li>
-									<a href="/register">
+									<a href="{{ url_for('register') }}">
 										<i class="fa fa-pencil fa-fw"></i>
 										Register
 									</a>
@ -207,7 +207,7 @@
 						{% if user_page %}
 						<form class="navbar-form navbar-right form" action="{{ url_for('view_user', user_name=user.username) }}" method="get">
 						{% else %}
-						<form class="navbar-form navbar-right form" action="/" method="get">
+						<form class="navbar-form navbar-right form" action="{{ url_for('home') }}" method="get">
 						{% endif %}
 							
 							<input type="text" class="form-control" name="q" placeholder="{{ search_placeholder }}" value="{{ search["term"] if search is defined else '' }}">
@ -243,7 +243,7 @@
 					{% if user_page %}
 					<form class="navbar-form navbar-right form" action="{{ url_for('view_user', user_name=user.username) }}" method="get">
 					{% else %}
-					<form class="navbar-form navbar-right form" action="/" method="get">
+					<form class="navbar-form navbar-right form" action="{{ url_for('home') }}" method="get">
 					{% endif %}
 						<div class="input-group search-container hidden-xs hidden-sm">
 							<input type="text" class="form-control search-bar" name="q" placeholder="{{ search_placeholder }}" value="{{ search["term"] if search is defined else '' }}">
--- a/nyaa/templates/search_results.html
+++ b/nyaa/templates/search_results.html
@ -12,7 +12,7 @@
 {% if special_results is defined and not search.user %}
 {% if special_results.first_word_user %}
 <div class="alert alert-info">
-	<a href="/user/{{ special_results.first_word_user.username }}{{ modify_query(q=special_results.query_sans_user)[1:] }}">Click here to see only results uploaded by {{ special_results.first_word_user.username }}</a>
+	<a href="{{ url_for('view_user', user_name=special_results.first_word_user.username) }}{{ modify_query(q=special_results.query_sans_user)[1:] }}">Click here to see only results uploaded by {{ special_results.first_word_user.username }}</a>
 </div>
 {% endif %}
 {% endif %}
@ -28,6 +28,9 @@
 				{% call render_column_header("hdr-name", "width:auto;") %}
 					<div>Name</div>
 				{% endcall %}
+				{% call render_column_header("hdr-comments", "width:50px;", center_text=True, sort_key="comments", header_title="Comments") %}
+					<i class="fa fa-comments-o"></i>
+				{% endcall %}
 				{% call render_column_header("hdr-link", "width:70px;", center_text=True) %}
 					<div>Link</div>
 				{% endcall %}
@ -44,12 +47,10 @@
 				{% endcall %}
 				{% call render_column_header("hdr-leechers", "width:50px;", center_text=True, sort_key="leechers", header_title="Leeches") %}
 					<i class="fa fa-arrow-down" aria-hidden="true"></i>
-
 				{% endcall %}
 				{% call render_column_header("hdr-downloads", "width:50px;", center_text=True, sort_key="downloads", header_title="Completed downloads") %}
 					<i class="fa fa-check" aria-hidden="true"></i>
 				{% endcall %}
-
 				{% endif %}
 			</tr>
 		</thead>
@ -61,20 +62,29 @@
 				{% set icon_dir = config.SITE_FLAVOR %}
 				<td style="padding:0 4px;">
 				{% if use_elastic %}
-				<a href="/?c={{ cat_id }}" title="{{ category_name(cat_id) }}">
+				<a href="{{ url_for('home', c=cat_id) }}" title="{{ category_name(cat_id) }}">
 				{% else %}
-				<a href="/?c={{ cat_id }}" title="{{ torrent.main_category.name }} - {{ torrent.sub_category.name }}">
+				<a href="{{ url_for('home', c=cat_id) }}" title="{{ torrent.main_category.name }} - {{ torrent.sub_category.name }}">
 				{% endif %}
-					<img src="/static/img/icons/{{ icon_dir }}/{{ cat_id }}.png" alt="{{ category_name(cat_id) }}">
+					<img src="{{ url_for('static', filename='img/icons/%s/%s.png'|format(icon_dir, cat_id)) }}" alt="{{ category_name(cat_id) }}">
 				</a>
 				</td>
-				{% if use_elastic %}
-				<td><a href="{{ url_for('view_torrent', torrent_id=torrent.meta.id) }}" title="{{ torrent.display_name | escape }}">{%if "highlight" in torrent.meta %}{{ torrent.meta.highlight.display_name[0] | safe }}{% else %}{{torrent.display_name}}{%endif%}</a></td>
-				{% else %}
-				<td><a href="{{ url_for('view_torrent', torrent_id=torrent.id) }}" title="{{ torrent.display_name | escape }}">{{ torrent.display_name | escape }}</a></td>
-				{% endif %}
-				<td style="white-space: nowrap;text-align: center;">
-					{% if torrent.has_torrent %}<a href="{{ url_for('download_torrent', torrent_id=torrent.id) }}"><i class="fa fa-fw fa-download"></i></a>{% endif %}
+				<td colspan="2">
+					{% set torrent_id = torrent.meta.id if use_elastic else torrent.id %}
+					{% set com_count = torrent.comment_count %}
+					{% if com_count %}
+					<a href="{{ url_for('view_torrent', torrent_id=torrent_id, _anchor='comments') }}" class="comments" title="{{ '{c} comment{s}'.format(c=com_count, s='s' if com_count > 1 else '') }}">
+						<i class="fa fa-comments-o"></i>{{ com_count -}}
+					</a>
+					{% endif %}
+					{% if use_elastic %}
+					<a href="{{ url_for('view_torrent', torrent_id=torrent_id) }}" title="{{ torrent.display_name | escape }}">{%if "highlight" in torrent.meta %}{{ torrent.meta.highlight.display_name[0] | safe }}{% else %}{{torrent.display_name}}{%endif%}</a>
+					{% else %}
+					<a href="{{ url_for('view_torrent', torrent_id=torrent_id) }}" title="{{ torrent.display_name | escape }}">{{ torrent.display_name | escape }}</a>
+					{% endif %}
+				</td>
+				<td class="text-center" style="white-space: nowrap;">
+					{% if torrent.has_torrent %}<a href="{{ url_for('download_torrent', torrent_id=torrent_id) }}"><i class="fa fa-fw fa-download"></i></a>{% endif %}
 					{% if use_elastic %}
 					<a href="{{ create_magnet_from_es_info(torrent.display_name, torrent.info_hash) }}"><i class="fa fa-fw fa-magnet"></i></a>
 					{% else %}
--- a/nyaa/templates/view.html
+++ b/nyaa/templates/view.html
@ -10,7 +10,7 @@
 	<div class="panel-heading"{% if torrent.hidden %} style="background-color: darkgray;"{% endif %}>
 		<h3 class="panel-title">
 			{% if can_edit %}
-			<a href="{{ request.url }}/edit" title="Edit torrent"><i class="fa fa-fw fa-pencil"></i></a>
+			<a href="{{ url_for('edit_torrent', torrent_id=torrent.id) }}" title="Edit torrent"><i class="fa fa-fw fa-pencil"></i></a>
 			{% endif %}
 			{{ torrent.display_name }}
 		</h3>
@ -132,8 +132,7 @@
 </div>
 {% endif %}

-
-<div class="panel panel-default">
+<div id="comments" class="panel panel-default">
 	<div class="panel-heading">
 		<h3 class="panel-title">
 			Comments - {{ comments | length }}
--- a/requirements.txt
+++ b/requirements.txt
@ -28,7 +28,7 @@ mysqlclient==1.3.10
 orderedset==2.0
 packaging==16.8
 passlib==1.7.1
-progressbar2==3.20.0
+progressbar33==2.4
 pycodestyle==2.3.1
 pycparser==2.17
 PyMySQL==0.7.11
--- a/sync_es.py
+++ b/sync_es.py
@ -24,6 +24,10 @@ database into es, at the expense of redoing a (small) amount of indexing.

 This uses multithreading so we don't have to block on socket io (both binlog
 reading and es POSTing). asyncio soon™
+
+This script will exit on any sort of exception, so you'll want to use your
+supervisor's restart functionality, e.g. Restart=failure in systemd, or
+the poor man's `while true; do sync_es.py; sleep 1; done` in tmux.
 """
 from elasticsearch import Elasticsearch
 from elasticsearch.helpers import bulk, BulkIndexError
@ -86,6 +90,7 @@ def reindex_torrent(t, index_name):
        "uploader_id": t['uploader_id'],
        "main_category_id": t['main_category_id'],
        "sub_category_id": t['sub_category_id'],
+        "comment_count": t['comment_count'],
        # XXX all the bitflags are numbers
        "anonymous": bool(f & TorrentFlags.ANONYMOUS),
        "trusted": bool(f & TorrentFlags.TRUSTED),
@ -132,14 +137,31 @@ def delet_this(row, index_name):
        '_type': 'torrent',
        '_id': str(row['values']['id'])}

+# we could try to make this script robust to errors from es or mysql, but since
+# the only thing we can do is "clear state and retry", it's easier to leave
+# this to the supervisor. If we we carrying around heavier state in-process,
+# it'd be more worth it to handle errors ourselves.
+# 
+# Apparently there's no setDefaultUncaughtExceptionHandler in threading, and
+# sys.excepthook is also broken, so this gives us the same
+# exit-if-anything-happens semantics. 
+class ExitingThread(Thread):
+    def run(self):
+        try:
+            self.run_happy()
+        except:
+            log.exception("something happened")
+            # sys.exit only exits the thread, lame
+            import os
+            os._exit(1)

-class BinlogReader(Thread):
+class BinlogReader(ExitingThread):
    # write_buf is the Queue we communicate with
    def __init__(self, write_buf):
        Thread.__init__(self)
        self.write_buf = write_buf

-    def run(self):
+    def run_happy(self):
        with open(SAVE_LOC) as f:
            pos = json.load(f)

@ -228,7 +250,7 @@ class BinlogReader(Thread):
            else:
              raise Exception(f"unknown table {s.table}")

-class EsPoster(Thread):
+class EsPoster(ExitingThread):
    # read_buf is the queue of stuff to bulk post
    def __init__(self, read_buf, chunk_size=1000, flush_interval=5):
        Thread.__init__(self)
@ -236,59 +258,72 @@ class EsPoster(Thread):
        self.chunk_size = chunk_size
        self.flush_interval = flush_interval

-    def run(self):
+    def run_happy(self):
        es = Elasticsearch(timeout=30)

        last_save = time.time()
        since_last = 0
+        # XXX keep track of last posted position for save points, awkward
+        posted_log_file = None
+        posted_log_pos = None

        while True:
            actions = []
-            while len(actions) < self.chunk_size:
+            now = time.time()
+            # wait up to flush_interval seconds after starting the batch
+            deadline = now + self.flush_interval
+            while len(actions) < self.chunk_size and now < deadline:
+                timeout = deadline - now
                try:
                    # grab next event from queue with metadata that creepily
                    # updates, surviving outside the scope of the loop
                    ((log_file, log_pos, timestamp), action) = \
-                            self.read_buf.get(block=True, timeout=self.flush_interval)
+                            self.read_buf.get(block=True, timeout=timeout)
                    actions.append(action)
+                    now = time.time()
                except Empty:
                    # nothing new for the whole interval
                    break

-            if not actions:
-                # nothing to post
-                log.debug("no changes...")
-                continue
+            if actions:
+                # XXX "time" to get histogram of no events per bulk
+                stats.timing('actions_per_bulk', len(actions))

-            # XXX "time" to get histogram of no events per bulk
-            stats.timing('actions_per_bulk', len(actions))
-
-            try:
-                with stats.timer('post_bulk'):
-                    bulk(es, actions, chunk_size=self.chunk_size)
-            except BulkIndexError as bie:
-                 # in certain cases where we're really out of sync, we update a
-                 # stat when the torrent doc is, causing a "document missing"
-                 # error from es, with no way to suppress that server-side.
-                 # Thus ignore that type of error if it's the only problem
-                for e in bie.errors:
-                    try:
-                        if e['update']['error']['type'] != 'document_missing_exception':
+                try:
+                    with stats.timer('post_bulk'):
+                        bulk(es, actions, chunk_size=self.chunk_size)
+                except BulkIndexError as bie:
+                     # in certain cases where we're really out of sync, we update a
+                     # stat when the torrent doc is, causing a "document missing"
+                     # error from es, with no way to suppress that server-side.
+                     # Thus ignore that type of error if it's the only problem
+                    for e in bie.errors:
+                        try:
+                            if e['update']['error']['type'] != 'document_missing_exception':
+                                raise bie
+                        except KeyError:
                            raise bie
-                    except KeyError:
-                        raise bie

-            # how far we're behind, wall clock
-            stats.gauge('process_latency', int((time.time() - timestamp) * 1000))
+                # how far we've gotten in the actual log
+                posted_log_file = log_file
+                posted_log_pos = log_pos
+
+                # how far we're behind, wall clock
+                stats.gauge('process_latency', int((time.time() - timestamp) * 1000))
+            else:
+                log.debug("no changes...")

            since_last += len(actions)
-            if since_last >= 10000 or (time.time() - last_save) > 10:
+            # TODO instead of this manual timeout loop, could move this to another queue/thread
+            if posted_log_file is not None and (since_last >= 10000 or (time.time() - last_save) > 10):
                log.info(f"saving position {log_file}/{log_pos}, {time.time() - timestamp:,.3f} seconds behind")
                with stats.timer('save_pos'):
                    with open(SAVE_LOC, 'w') as f:
-                        json.dump({"log_file": log_file, "log_pos": log_pos}, f)
+                        json.dump({"log_file": posted_log_file, "log_pos": posted_log_pos}, f)
                last_save = time.time()
                since_last = 0
+                posted_log_file = None
+                posted_log_pos = None

 # in-memory queue between binlog and es. The bigger it is, the more events we
 # can parse in memory while waiting for es to catch up, at the expense of heap.