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...Rails has a method ActiveRecord::Relation#merge that can merge ActiveRecord scopes. However, its behavior has never been clear, and in Rails 7 it still discards conditions on the same...

Every Rails response has a default ETag header. In theory this would enable caching for multiple requests to the same resource. Unfortunately the default ETags produced by Rails are effectively...

...random, meaning they can never match a future request. Understanding ETags When your Rails app responds with ETag headers, future requests to the same URL can be answered with an...