January 09, 2024

Implementing Elixir Node Clustering Through PostgreSQL

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Implementing Elixir Node Clustering Through PostgreSQL

Source: supabase.com

Filipe Cabaço from the Supabase Realtime team shares insights on how Elixir's clustering feature facilitates communication between different nodes without extra services, thus streamlining system complexity. However, despite its power, node discovery for cluster connection poses challenges. To tackle this, the team at Supabase has released an open-source solution, the libcluster Postgres Strategy, which uses PostgreSQL's NOTIFY and LISTEN commands to propagate events within instances. The article explains how they leveraged libcluster - a package for connecting BEAM instances, and the PostgreSQL event system to seamlessly connect nodes across different cloud environments without additional services. It details the process of implementing the strategy, ensuring scalability and cloud-provider agnosticism for clustered Elixir applications. The solution is now available on GitHub, helping others to apply this clustering method in their own Elixir projects.

Integrating OpenAI with Phoenix for Streaming Responses

Benj Reinhart writes about integrating OpenAI’s chat completions endpoint with their Phoenix application. This is the first post in a series aimed at developers looking to incorporate large language models into their products. It outlines the creation of a module for streaming chat completions, including handling authentication, parsing JSON responses, and setting up an endpoint for client streaming.

Jan 07, 2024

Performance Comparison of Tail-Recursive and Body-Recursive Functions in Different Elixir Versions

PragTob explored the performance differences between tail-recursive and body-recursive functions across various versions of Elixir and BEAM, particularly noting the impact of the JIT (just-in-time) compiler.

Jan 08, 2024

Avoiding Common Pitfalls when Retrying Elixir Tests in CI

Angelika Tyborska discusses the issues with using a common CI snippet for Elixir test retries and how to fix them.

Jan 08, 2024