supavisor VS benchmarks

WalEx instead of pub/sub (listen/subscribe): https://github.com/cpursley/walex

Supavisor connection pooler: https://github.com/supabase/supavisor

To make use of your read replicas, copy your connection string for the read replica, update your apps to use the new read replica and you are done! A unique connection pool is also provisioned for each read replica via Supavisor.

[I'm on the supabase team]

You can find the code/docs here: https://github.com/supabase/supavisor

This release adds support for

- SQL Parsing

- Load balancing

- support for named prepared statement

- query cancellation

It's also now available on all new databases in Supabase. For some more background on scalability, we have some benchmarks available here:

https://supabase.com/blog/supavisor-1-million

PgBouncer maintainer here, so obviously biased. But I think currently PgBouncer should still be the default connection pooler that you choose. There's a few newer options: Odyssey, pgcat, and supavisor. But all focus on a solving 1 or 2 specific problems that PgBouncer did not solve well, while not solving many of the other problems that PgBouncer does solve. So if you have the exact same requirements as the authors of those tools, then switching might be good. But otherwise you should probably continue using PgBouncer.

Supavisor specifically is really immature. It's missing some really core functionality like query cancellations: https://github.com/supabase/supavisor/issues/174

I did a talk on this exact topic at PGConf NYC recently. My slides are here: https://github.com/JelteF/slides/raw/main/2023-10-05-future-...

If you are interested in exploring Supavisor's potential or want to implement its scalability in your upcoming project, check out the GitHub repository to know more.

Phoenix.PubSub is basically a noop service. It really just works. You should try it!

If discovering nodes is difficult in your env, try using a listen/notify libcluster strategy:

https://github.com/supabase/supavisor/blob/main/lib/cluster/...

[2] https://github.com/supabase/supavisor

Supavisor

We use a custom load-testing application to test the features of the Supabase platform. It consists of:

here is the github repo[0] with an app that helps me launch terraforms and k6 and keep track of launches/results

[0]https://github.com/supabase/benchmarks

We benchmark the various tools here: https://github.com/supabase/benchmarks

PostgREST is used inside every Supabase project. We have >50K projects now[0], some of them making (tens of) millions of API requests through PostgREST daily.

It's a fantastic piece of tech, especially when coupled with PostgreSQL Row Level Security. We have some benchmarks here in case you're concerned about performance: https://github.com/supabase/benchmarks/issues/2

[0] On our hosted platform. We don't add telemetry to self-hosting