alt Hacker NewsOne niche feature of Erlang that I love is live module upgrades, particularly via gen_server's code_change/3 callback. It's a neat little trick that seems to be rarely used in practice, but every single time I've used it I just loved how everything simply clicked together, providing zero disruption with nearly minimal effort (for simple state upgrades or downgrades).
I wonder if it's supported with Gleam and/or gleam_otp? Don't see it in the docs.
Replies
lpil • 10/12/2024
No particular support but you can use all the regular Erlang OTP APIs for this. The trade off is that you lose type safety.
Do you know the current status of gleam_otp? I’ve been in the erlang (and more recently elixir) world for a long time and am quite excited about gleam, but when I looked at it early on it didn’t seem to have a great solution for OTP. Can I write genservers in gleam now, and can they run as part of an elixir/erlang application/supervision tree?