Who contributed to Rails on August 8, 2026?

8 developers shipped this update, including stanhu, Jean Boussier, flavorjones, gmcgibbon, Edouard-chin, Rafael Mendonça França, siaw23, and Amanda Perino.

What were the notable Rails updates?

Ignore YJIT status in the compile cache key, Active Record ivar ractor safety, and Ractor compatible Active Support Notifications.

@rails

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The Wire · Showcase

RAILS TACKLES RACTOR SAFETY ACROSS ACTIVE RECORD, NOTIFICATIONS, AND STORAGE

By RepoJournal · Filed 06:55 UTC on August 8, 2026 · About Rails

8 people shipped this

Edouard-chin @Edouard-chin 2 cited

stanhu @stanhu 1 cited

flavorjones @flavorjones 1 cited

gmcgibbon @gmcgibbon 1 cited

Rafael Mendonça França @rafaelfranca 1 cited

Jean Boussier @byroot

siaw23 @siaw23

Amanda Perino @AmandaPerino

Rails is shipping a wave of Ractor compatibility fixes that unlock concurrent execution in core frameworks while fixing a cache invalidation bug that's been silently nuking performance.

The biggest push lands in Active Record, where instance variables now freeze properly for non-main Ractor access [2], and Active Support Notifications finally works inside Ractors by making the subscriber cache thread-safe [3]. These aren't optional refinements. They're the foundation for shipping concurrent code without hitting runtime walls. Meanwhile, Bootsnap gets a critical fix that stops invalidating the entire compile cache whenever YJIT toggles at runtime [1], a silent performance killer for anyone mixing YJIT-enabled and disabled processes. On storage, Active Storage now lets you swap in a custom class for variant processing [4], matching the extensibility pattern already available for analyzers and previewers. Rails also restored the public `loaded` method on RoutesReloader [6], which was accidentally removed but is part of the published API. ERB template configuration now flows through ActionView::Base [5] instead of forcing direct class manipulation.

Action items

→ Review and test Ractor compatibility fixes in your Active Record models and background jobs rails/rails [plan]
→ Update Bootsnap if you're running YJIT in production to restore cache stability rails/bootsnap [plan]
→ Audit RoutesReloader usage if you call the `loaded` method directly rails/rails [monitor]

References

[1] Ignore YJIT status in the compile cache key rails/bootsnap
[2] Active Record ivar ractor safety ↗ rails/rails
[3] Ractor compatible Active Support Notifications ↗ rails/rails
[4] Allow `config.active_storage.variant_processor` to be set to a class ↗ rails/rails
[5] Allow to configure ERB options through `ActionView::Base` ↗ rails/rails
[6] Add back `loaded` to RoutesReloader rails/rails

Quick answers

What shipped in Rails on August 8, 2026?: Rails is shipping a wave of Ractor compatibility fixes that unlock concurrent execution in core frameworks while fixing a cache invalidation bug that's been silently nuking performance. In total, 26 commits and 12 pull requests landed.
Who contributed to Rails on August 8, 2026?: 8 developers shipped this update, including stanhu, Jean Boussier, flavorjones, gmcgibbon, Edouard-chin, Rafael Mendonça França, siaw23, and Amanda Perino.
What were the notable Rails updates?: Ignore YJIT status in the compile cache key, Active Record ivar ractor safety, and Ractor compatible Active Support Notifications.

RAILS WORLD 2026 PROGRAMME LIVE, ACTIONTEXT MARKDOWN FIXED, NESTED ATTRIBUTES INJECTION PATCHED

Rails World 2026 speakers and schedule go live on the website, while core ships critical fixes for markdown rendering and parameter injection in nested attributes.

ruby 27 shipped

@rails Aug 6

RAILS FIXES PLUCK REGRESSION, BOOTSNAP DITCHES MARSHAL FOR MSGPACK

Rails patched a critical regression in association plucking for new records that broke `ids` queries overnight, while bootsnap replaced Date marshalling with faster, more compact msgpack serialization.

ruby 40 shipped

@rails Aug 5

RAILS HARDENS FILE STORAGE, UNIFIES FOREIGN KEY HANDLING ACROSS 22 COMMITS

Rails killed a filesystem vulnerability while Propshaft eliminates globbing from production asset lookups in coordinated pushes toward Ractor compatibility.

ruby 35 shipped

@rails Aug 4

Rails fixes composite foreign key tracking across counter cache and autosave

Belongs_to associations with aliased or composite foreign keys were silently failing change detection, breaking counter cache increments, touch callbacks, and validation.

ruby 25 shipped

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ai-agents 99 shipped

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infra 51 shipped

Elixir & Phoenix Aug 8

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Daniel Kukula shipped three consecutive optimizations to Elixir's date parsing pipeline, removing accumulators and intermediate allocations in a focused performance push [ref:1] [ref:2] [ref:3].