Inside Rails: The Lifecycle of a Response
summary
Shows exactly how a Rails app turns an HTTP request into a three‑part response array: status, headers, body, and what components actually make that happen. Demonstrates using Telnet, Puma/Unicorn and Rack ETag plus Rack Conditional Get to compute 304s, how redirect_to doesn’t halt execution causing double render errors, how stale avoids full rendering for ETags, asset fingerprinting, and caching helpers like http_cache_forever (max-age 3,155,695,200 seconds). Includes code behavior details and real pitfalls to watch for.
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