steveklabnik/request_store

Health v2 · maintenance only

Adoption not part of the score

1500 stars · 90 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

RequestStore is a Ruby gem providing per-request global storage for Rack applications, replacing error-prone Thread.current usage with request-scoped state that is cleared after each request. It ships as Rack middleware with a Rails Railtie and Sidekiq integration.

Use cases

• store per-request state in Rails without Thread.current leaks
• share data like current_user across middleware and controllers
• avoid stale global state on threaded servers like Puma or Thin
• clear request-scoped variables between Sidekiq jobs
• memoize per-request values with RequestStore.fetch

When to choose

• you need request-scoped global state in a Rack/Rails app
• Thread.current values leak across requests on threaded servers
• you want simple per-request memoization or context storage

When to avoid

• you need distributed or persistent storage rather than in-process state
• you are not on Rack or a Rack-compatible framework
• you need state scoped to something other than an HTTP request or job

Facets

library · maturity stable

middleware caching web-framework web-development backend developer-tools ruby rack-middleware thread-local-storage request-scoped-state rails sidekiq web-server rack

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