• [BREAKING CHANGE] Ruby version 3.1.0 or later is required. #632
• [FEATURE] Implement prepend patch for postgres #625
• [FEATURE] Show Active Record QueryCache hits in UI. #640
• [FEATURE] Show record type and count in SQL query UI. #638
• [FIX] Requests page fails due to trying to modify a frozen string. #630
• [FIX] alignment of SQL query start times. #627
• [FIX] Lower case HTTP response headers to be compatible with Rack 3 #628
• [FIX] Truncate long profiler name in profiler popup. #634
• [FIX] flamegraph_mode query param having no effect. #635
• [FIX] max_traces_to_show had chance to break the profiler frontend #297

What's Changed

• Fix Rack::File is deprecated and will be removed in Rack 3.1 by @taketo1113 in #604
• Add Ruby 3.3 gem to CI by @taketo1113 in #603
• Display name in badge by @nateberkopec in #602
• FEATURE: Support dynamic config.content_security_policy_nonce by @davidtaylorhq in #609
• Add flamegraph path to response headers by @soberstadt in #601

New Contributors

• @taketo1113 made their first contribution in #604
• @soberstadt made their first contribution in #601

Full Changelog: v3.3.0...v3.3.1

• [FEATURE] Use ?pp=flamegraph?ignore_gc=true or config.flamegraph_ignore_gc to ignore gc in flamegraphs. #599

• [BREAKING CHANGE] Ruby version 2.7.0 or later is required.
• [FEATURE] All RMP actions can be chosen by including a X-Rack-Mini-Profiler header as well as by query parameter. #578
• [FEATURE] Speedscope 1.12 -> 1.16
• [FIX] If patch_rails is false, do not patch mysql2 or pg #583
• [FIX] vertical position bottom now aligns the detail window correctly #581
• [FIX] Webpacker hiccup in some setups #582
• [INTERNAL] Capture rows instantiated by ActiveRecord, UI to be added later #585
• [INTERNAL] Lots of refactoring.

• [FEATURE] The query parameter that RMP uses (by default, pp) is now configurable #553
• [FEATURE] You can now opt-out of the Net::HTTP patch by using RACK_MINI_PROFILER_PATCH_NET_HTTP="false"
• [FIX] Error responses now include header values from the app, and stackprof not installed message now has correct content #547
• [FIX] RMP pages now have more valid HTML, with title elements #552
• [BREAKING CHANGE] Ruby 2.4 and Ruby 2.5 are no longer supported.
• [FIX] Now works with apps that don't otherwise require erb #531
• [DOCS] Added Heroku Redis instructions
• [DEPRECATION] We are changing the name of the generators to rack_mini_profiler, e.g. rack_mini_profiler:install #550