Supavisor – a Postgres connection pooler written in Elixir
hey hn, supabase ceo here this is a postgres connection pooler. it’s similar to pgbouncer, but built with Elixir and specifically designed for multi-tenancy. it’s still under development, but it’s at a stage where we can gather a feedback from the community and you can try it yourself. we aren’t using this in production yet, but aiming to deploy it for a subset of databases in the next 2 months. We have the following benchmarks (details in the readme): - Elixir Cluster maintaining 400 connections to a single Postgres database - 1_000_000 clients connecting to the Elixir cluster - Sending…
In plain words
Supavisor is a Postgres connection pooler built with Elixir as an alternative to pgBouncer. It is designed specifically for multi-tenant environments and can run as a cluster or single node. The tool handles connection pooling between applications and Postgres databases, supporting up to one million concurrent clients and processing thousands of transactions per second. It is in active development and not yet in production use.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
hey hn, supabase ceo here this is a postgres connection pooler. it’s similar to pgbouncer, but built with Elixir and specifically designed for multi-tenancy. it’s still under development, but it’s at a stage where we can gather a feedback from the community and you can try it yourself. we aren’t using this in production yet, but aiming to deploy it for a subset of databases in the next 2 months. We have the following benchmarks (details in the readme): - Elixir Cluster maintaining 400 connections to a single Postgres database - 1_000_000 clients connecting to the Elixir cluster - Sending 20_000 transactions per second - Consuming 7.8G RAM and ~50% CPU on a 64vCPU machine supavisor can be run as a cluster or a single node/binary. It’s handling 90%+ of the throughput of pgbouncer on a local machine (running pgbench) we will place this in front of all supabase databases. It will eventually be able to handle multiple types of connections: traditional TCP connections, and HTTP connections for developers who are connecting to Postgres in serverless environments using Prisma, Kysely, Drizzle, etc the proxy will serve as a connection buffer while we scale databases: scaling up compute with zero-downtime, and for scale-to-zero - triggering a server restart when a connection is initiated finally, i want to shout out to Jose and the Dashbit/elixir team. They were extremely helpful with the design & architecture. they have been valuable partners, and elixir continues to be an amazing language for tools like this and our Realtime server.
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