pgcat
supavisor
| pgcat | supavisor | |
|---|---|---|
| 3 | 15 | |
| 2,551 | 1,591 | |
| 2.7% | 2.3% | |
| 8.0 | 8.9 | |
| 3 days ago | 6 days ago | |
| Rust | Elixir | |
| MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
pgcat
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MySQL 8.2 Introduces Transparent Read/Write Splitting
Not natively, no. You’d need to front it with something like PgCat [0].
[0]: https://github.com/postgresml/pgcat
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How to Listen to Database Changes Using Postgres Triggers in Elixir
For #1 I've been keeping a keen eye on pgcat [1], in particular the https://github.com/postgresml/pgcat/issues/303 which
- Can someone share experience configuring Highly Available PgSQL?
supavisor
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PostgreSQL Is Enough
WalEx instead of pub/sub (listen/subscribe): https://github.com/cpursley/walex
Supavisor connection pooler: https://github.com/supabase/supavisor
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Introducing Read Replicas
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.
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Supavisor 1.0: a scalable connection pooler for Postgres
[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
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PgBouncer 1.21.0 released with prepared statement support
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-...
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Supavisor: Scaling Postgres to 1 Million Connections
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.
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How to Listen to Database Changes Using Postgres Triggers in Elixir
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/...
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The Database Package Manager for PostgreSQL Trusted Language Extensions
[2] https://github.com/supabase/supavisor
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Supabase Logs: open source logging server
Supavisor
- Supavisor - Postgres connection pooler written in Elixir
- Supavisor - a Postgres connection pooler written in Elixir
What are some alternatives?
pgbouncer - lightweight connection pooler for PostgreSQL
pg_tle - Framework for building trusted language extensions for PostgreSQL
odyssey - Scalable PostgreSQL connection pooler
mssql-changefeed
postgresql_cluster - PostgreSQL High-Availability Cluster (based on "Patroni" and DCS "etcd" or "consul"). Automating with Ansible.
debezium - Change data capture for a variety of databases. Please log issues at https://issues.redhat.com/browse/DBZ.
sql-examples - Curated list of SQL to help you find useful script easily 🚀
cloudpilot-emu - A PalmOS emulator for the web
walex - Postgres change events (CDC) in Elixir
citus - Distributed PostgreSQL as an extension
cainophile