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Updated About the database and tables (markdown)

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Omar Roth 2019-01-24 12:42:43 -06:00
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About-the-database-and-tables.md
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Invidious needs one PostgreSQL database with five tables.
`channel_videos` Stores truncated video info, used to create user feeds
`channels` Stores UCID and author name
`nonces` Keeps track of tokens issued to prevent CSRF
`users` Stores user info, such as preferences, username, subscriptions
`videos` Stores video cache, used to create "top" page
The table `videos` grows a lot and needs the most storage. You can clean it up using following commands:
```bash
$ sudo -i -u postgres
$ psql invidious -c "DELETE FROM nonces * WHERE expire < current_timestamp"
$ psql invidious -c "TRUNCATE TABLE videos"
$ exit
```
For regular maintenance you should add a cronjob for these commands
```bash
@weekly psql invidious -c "DELETE FROM nonces * WHERE expire < current_timestamp"
@weekly psql invidious -c "TRUNCATE TABLE videos"
```