ruby-on-rails
Structured logging lands in Rails 8.1 with the Rails.event API. How the Structured Event Reporter replaces regex-parsed log lines with JSON events, plus tags, context, schemas, debug mode, and how to subscribe and test events in your own app.
ruby
ActiveJob::Continuable lets long-running Rails jobs survive restarts: split work into steps, track progress with cursors and checkpoints, and resume exactly where the job stopped. Covers error handling, queue adapter support, and a practical example.
ruby
params.expect in Rails 8 replaces require/permit and fixes a real weakness: crafted params like ?user=string used to raise NoMethodError and 500 errors. How the new syntax works, how it handles arrays with precision, and how to migrate your controllers.