feat(server): load face entities faster

[l0nax]

The added indices are based on monitoring a server with

• 6 users
• 120.000+ Pictures
• 500+ GiB Storage

Especially the query executed when loading the peoples' page gains a speedup of 4x.

[zackpollard]

These indexes should be managed inside the typeorm schema. Take a look at the following docs from TypeORM, you can create the indexes using the schema and have it automatically generate the migration file for you. https://orkhan.gitbook.io/typeorm/docs/indices

[jrasm91]

Thanks for the PR! Is there a way to have postgres show the slowest x queries? It would be cool to see what those are on a large instance.

[l0nax]

@jrasm91 there are many ways to monitor your PostgreSQL instance.

You could use, e.g., the pg_stat_statements extension.
Postgres can even generate execution plans for slow queries automatically (see https://www.postgresql.org/docs/current/auto-explain.html).

[davidpan]

Thanks for the PR! Is there a way to have postgres show the slowest x queries? It would be cool to see what those are on a large instance.

For development and testing, you can use pg_stat_statements.
link: https://www.postgresql.org/docs/current/pgstatstatements.html

[jrasm91]

Thank you!