Libcluster Postgres Strategy for Elixir
hey hn, I’m Filipe, a developer at supabase we have three projects using Elixir in a clustered setup. we’ve always used libcluster[0] to achieve it but ended up using multiple strategies. now we’ve converged into one approach for all our projects using Postgres as the coordinator. we’re using Postgres LISTEN and NOTIFY commands with Postgrex as the system to propagate node addresses so they can connect plus we use it to send healtcheck pings to heal when required. big thanks to https://twitter.com/gotbones for the libcluster library and…
In plain words
Libcluster Postgres Strategy for Elixir is a clustering strategy that enables Elixir applications to discover and connect to each other using PostgreSQL as a coordinator. It leverages Postgres LISTEN and NOTIFY commands with Postgrex to propagate node addresses across clustered systems and includes health-check pings to manage node failures. Built by developers at Supabase, it consolidates multiple clustering approaches into a single unified solution for distributed Elixir applications.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
hey hn, I’m Filipe, a developer at supabase we have three projects using Elixir in a clustered setup. we’ve always used libcluster[0] to achieve it but ended up using multiple strategies. now we’ve converged into one approach for all our projects using Postgres as the coordinator. we’re using Postgres LISTEN and NOTIFY commands with Postgrex as the system to propagate node addresses so they can connect plus we use it to send healtcheck pings to heal when required. big thanks to https://twitter.com/gotbones for the libcluster library and https://twitter.com/kevinbuch_ for the inspiration [0] libcluster: https://hexdocs.pm/libcluster/readme.html
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