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Engineering

Observer in Production: The BEAM Introspection Nobody Talks About

:observer is the most underused debugging tool in the Elixir ecosystem. Attached to a running node, it shows you every process, every ETS table, every mailbox β€” live. Here's how to run it safely against prod.

Apr 09, 2026 Β· 6 min read Β· TomΓ‘Ε‘ Korcak (korczis)
observer debugging beam +2

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elixir 52 osint 21 architecture 20 compliance 11 due-diligence 11 security 11 phoenix 10 intelligence 10 otp 10 liveview 9 pipeline 8 performance 7 deployment 6 quality 6 czech 6 pubsub 6 nis2 6 ci-cd 6 api 6 evolution 6 umbrella 5 observability 5 doctrine 5 metrics 5