Blog

• A 1ms partition is enough to corrupt a node

  October 4, 2026 · 5 min read

  Phoenix.PubSub is fire-and-forget, so a momentary disconnect leaves a silent hole in the stream - and the node that missed those messages never finds out. EchoPubSub closes the gap with a buffer and per-node cursors.

  • elixir
  • distributed-systems
  • pubsub

• Coverage you'll actually read

  June 13, 2026 · 5 min read

  Stop scrolling thousands of modules - get coverage for the files you touched, and a PR comment that tells you if you made things better or worse

  • elixir
  • testing
  • ci

• The trappable :kill signal

  June 7, 2026 · 3 min read

  When :kill doesn't kill the process

  • elixir
  • otp
  • beam

• Speed up your tests a few times by using partitions

  June 6, 2026 · 2 min read

  See how you can use partitions and run them conveniently

  • elixir
  • testing
  • ci