149: Elixir's new Unified Logger

Hauleth (Łukasz Jan Niemier) takes us deeper into the Elixir and Erlang loggers. He recently closed a 3.5 year old bug on the ElixirLang Github project by unifying the Elixir logger with the logger that Erlang got in OTP 21. We touch on the history, why it took so long, what we should think of the new logging levels, and what the original goals were that he set out to achieve. We also get an introduction to the new logging filters and handlers along with some peeks into future Erlang logging features that may still be yet to come in Elixir!

Show Notes online - http://podcast.thinkingelixir.com/149

Elixir Community News

• https://podcast.thinkingelixir.com/73 – Previous interview with Paul Copplestone about Elixir and Supabase
• https://twitter.com/kiwicopple/status/1646918873445195783 – Supabase had their own release week. Paul shared his favorite one.
• https://supabase.com/blog/dbdev – Supabase blog post about dbdev - a Postgres extension package manager
• https://database.dev/installer – Database.dev is the dedicated site for dbdev
• https://twitter.com/josevalim/status/1649001076404768768 – José Valim shared the Livebook notebook used during his ElixirConf EU presentation
• https://github.com/josevalim/livebooks/blob/main/talks/2023/04-elixir-conf.livemd – José's Livebook from his presentation
• https://twitter.com/visual_partner/status/1648979346491580416 – Visual drawing created from José's ElixirConf EU keynote
• https://twitter.com/livebookdev/status/1648328527026987008 – New Livebook KinoDiff feature makes it easy to visually display a diff between two strings in Livebook.
• https://twitter.com/theerlef/status/1649442881302822915 – Erlang OTP 26 RC 3
• https://www.erlang.org/news/163 – Blog post for Erlang/OTP 26.0 Release Candidate 3
• https://www.erlang.org/blog/more-optimizations/ – Blog post on Erlang website about OTP 26 optimizations in the compiler and JIT
• https://twitter.com/michalmuskala/status/1650511805339381763 – Erlang library called “erlfuzz” was released.
• https://erlangforums.com/t/open-sourcing-erlfuzz/2562 – Erlfuzz forum post. It is a fuzzer for Erlang code and the BEAM.
• https://github.com/evadne/emporium – Evadne Wu released an Elixir example application that walks through a variety of Elixir ML operations
• https://paraxial.io/blog/sobelow-guide – Blog post from Paraxial.io on a guide to using Sobelow
• https://github.com/paraxialio/sobelow_guide – Github readme explains more about Sobelow findings and how to correct them.
• https://github.com/woutdp/live_svelte – A new project called LiveSvelte was released. Helps integrate using Sevelte front-end JS with a LiveView
• https://wout.space/notes/live-svelte – Blog post about live_svelte

Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at show@thinkingelixir.com

Discussion Resources

• https://twitter.com/whatyouhide/status/1626544505506656257 – PR that closed a 3.5yo Elixir issue on unifying Erlang and Elixir loggers.
• https://github.com/elixir-lang/elixir/issues/9465 – Github Issue “Further unify logger and Logger”
• https://www.erlang.org/doc/man/logger.html – Erlang logger docs. Referenced.
• https://hexdocs.pm/logger/main/Logger.html – Elixir logger docs (able to see the “1.15.0-dev” version)
• https://www.erlang.org/doc/apps/sasl/ – SASL Logging docs
• https://www.eiger.co/
• https://github.com/hauleth/mix_unused
• https://github.com/hauleth/erlang-systemd
• https://systemd.io/
• https://github.com/erlang-lager/lager
• https://riak.com/posts/technical/introducing-lager-a-new-logging-framework-for-erlangotp/index.html
• OTP 21 added built-in logging
• https://www.erlang.org/doc/man/logger_filters.html
• https://github.com/elixir-lang/elixir/blob/main/CHANGELOG.md

Guest Information

• https://twitter.com/hauleth – on Twitter
• https://github.com/hauleth/ – on Github
• https://fosstodon.org/@hauleth – on Fediverse
• https://hauleth.dev – Blog

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