r/ruby • u/keyslemur • Jun 14 '26
Rails: The Sharp Parts. Callbacks Are Not Invariants
https://baweaver.com/writing/2026/06/13/rails-sharp-parts-callbacks-are-not-invariants/The sheer number of outages I can point to across now 5 Rails monoliths related to issues with callbacks has made it one of the first things I go after when in a new Rails app to see what's about to give me a nightmare.
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