[ruby] Update puma 7.2.0 → 8.0.0 (major)

[depfu]

Here is everything you need to know about this upgrade. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ puma (7.2.0 → 8.0.0) · Repo · Changelog

Release Notes

8.0.0

Read our Version 8 Upgrade Guide.

• Features

  • Add env["puma.mark_as_io_bound"] API and max_io_threads config to allow IO-bound requests to exceed the thread pool max, enabling better handling of mixed workloads ([#3816], [#3894])
  • Add single and cluster DSL hooks for mode-specific configuration ([#3621])
  • Add on_force option to shutdown_debug to only dump thread backtraces on forced (non-graceful) shutdown ([#3671])
  • Add API to dynamically update min and max thread counts at runtime via update_thread_pool_min_max and ServerPluginControl ([#3658])
  • Use SIGPWR for thread backtrace dumps on Linux/JRuby where SIGINFO is unavailable ([#3829])

• Bugfixes

  • Fix phased restart for fork_worker to avoid forking from stale worker 0 when it has been replaced ([#3853])

• Performance

  • JRuby HTTP parser improvements: pre-allocated header keys, perfect hash lookup, reduced memory copies ([#3838])
  • Cache downcased header key in str_headers to avoid redundant String#downcase calls, reducing allocations by ~50% per response ([#3874])

• Refactor

  • Collect env processing into dedicated client_env.rb module ([#3582])
  • Move event to default configuration ([#3872])

• Docs

  • Add gRPC guide for configuring gRPC lifecycle hooks in clustered mode ([#3885])
  • Add 7.0 upgrade guide, move 5.0/6.0 upgrade guides to docs directory ([#3900])
  • Correct default values for persistent_timeout and worker_boot_timeout in DSL docs ([#3912])
  • Add file descriptor limit warning in test helper for contributors ([#3893])

• Breaking changes

  • Default production bind address changed from 0.0.0.0 to :: (IPv6) when a non-loopback IPv6 interface is available; falls back to 0.0.0.0 if IPv6 is unavailable ([#3847])

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 45 commits:

• Release v8.0.0 (#3914)
• Fix IPv4-mapped IPv6 addresses in `REMOTE_ADDR` and request logs (#3916)
• Build(deps): Bump actions/checkout from 4 to 6 (#3915)
• Update SECURITY.md, native Github vuln reports [ci skip] (#3913)
• Minor correction to defaults documented in dsl.rb (#3912)
• ci: limit rack-conform to main pushes and scope ragel PR runs (#3908)
• ci: run turbo-rails only on latest stable Ruby and Rails (#3909)
• ci: replace skip-duplicate jobs with concurrency and trigger filters (#3907)
• ci: run push workflows only on main and release branches (#3906)
• Add release pre-merge checks and align Release.md [ci skip] (#3904)
• Use IPv6 (`::`) default for production (#3847)
• Update Release.md for major releases [ci skip] (#3902)
• Add SVG brand assets and switch README logo [ci skip] (#3901)
• Move 5.0/6.0 upgrade guides to docs and add 7.0 guide (#3900)
• rm stackoverflow badge (rip) [ci skip] (#3899)
• client.rb - dry up `above_http_content_limit` (#3889)
• Build(deps): Bump actions/upload-artifact from 6 to 7 (#3891)
• docs: proofread Release.md [ci skip] (#3898)
• [puma#3882] add descriptor warning (#3893)
• Fix phased restart for fork_worker to avoid forking from stale worker 0 (#3853)
• Add `on_force` option to `shutdown_debug` (#3671)
• #3816 followups and test cleanup (#3894)
• Implement prototype for IO bound processor threads (#3816)
• Add single and cluster configuration hooks (#3621)
• Collect `env` processing into `client_env.rb` (#3582)
• Add helper method `set_pumactl_config`, port/path variables (#3881)
• ci: helper.rb - fixup `UniquePort.call`, add `sock.setsockopt(:SOCKET, :REUSEADDR, 0)` (#3880)
• [#3875] add shared test helper (#3879)
• Add a new API to update the min & max thread count dynamically (#3658)
• Add gRPC guide (#3885)
• ci: tests.yml - macOS jobs reduce from 19 to 14 (#3883)
• Treat stale PR review decisions as waiting-for-review [ci skip] (#3884)
• ci: reduce CI socket flakiness with shared helpers (#3873)
• JRuby HTTP parser improvements (#3838)
• Fix PR label manager pagination to fetch all reviews (#3877)
• ci: test_puma_server_ssl.rb - fix two cipher suite tests (#3878)
• Docs: document Ruby patch workaround policy (CI skip)
• Docs: clarify Ruby patch CI coverage (CI skip)
• Increase timeout for Intel JRuby tests to 12 minutes (#3876)
• Merge pull request #3874 from hadrienblanc/perf/cache-header-key-downcase
• Fix flaky integration tests (#3870)
• Perf: Cache downcased header key in str_headers
• Move event to default configuration (#3872)
• SIGPWR for backtrace on Linux/JRuby (#3829)
• ci: Run integration tests parallel for all Rubies (#3866)

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