--- title: GitHub - igorkasyanchuk/rails_named_cache: Multiple... description: rails_named_cache is a Ruby gem that adds multiple named cache stores to Rails via `Rails.cache(:name)`. It lets you configure distinct cache backends... canonical: https://daily.dev/posts/github---igorkasyanchuk-rails-named-cache-multiple-named-cache-stores-for-rails-through-rails-cach-b8mzdnstp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: GitHub - igorkasyanchuk/rails_named_cache: Multiple named cache stores for Rails, through Rails.cache(:name) | daily.dev og:description: rails_named_cache is a Ruby gem that adds multiple named cache stores to Rails via `Rails.cache(:name)`. It lets you configure distinct cache backends... og:url: https://daily.dev/posts/github---igorkasyanchuk-rails-named-cache-multiple-named-cache-stores-for-rails-through-rails-cach-b8mzdnstp og:image: https://api.daily.dev/og/posts/b8mzDnstP.png og:image:alt: GitHub - igorkasyanchuk/rails_named_cache: Multiple named cache stores for Rails, through Rails.cache(:name) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # GitHub - igorkasyanchuk/rails_named_cache: Multiple named cache stores for Rails, through Rails.cache(:name) **[Ruby Flow](https://daily.dev/sources/rubyflow)** · 12 min read · 1 upvotes · 0 comments ## Summary rails_named_cache is a Ruby gem that adds multiple named cache stores to Rails via `Rails.cache(:name)`. It lets you configure distinct cache backends (MemoryStore, Redis, FileStore, NullStore) per domain, each with its own size, TTL, and eviction policy. Named stores are isolated — clearing one doesn't affect others — and the API returns the raw ActiveSupport store with no wrapper. The gem covers L1/L2 layering patterns, per-store expiration, hit/miss logging, testing strategies (clearing between examples, swapping stores per test), and important caveats around memory usage, thread contention, cross-process invalidation, and Redis keyspace isolation via namespaces. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I use multiple different cache stores in a single Rails application? The rails_named_cache gem lets you configure multiple named ActiveSupport::Cache::Store instances through config.named_cache_stores, then access each with Rails.cache(:name), such as Rails.cache(:memory) or Rails.cache(:redis). The default Rails.cache remains untouched, and unknown names raise an UnknownStoreError instead of silently falling back. _Developers designing multi-tier caching in Rails can track gem updates like this on daily.dev._ ### Why is ActiveSupport::Cache::MemoryStore so much faster than Redis for reads in Rails? MemoryStore reads avoid a network round trip, connection pool checkout, and wire protocol encode/decode that Redis or Memcached require. Benchmarked on Ruby 3.4.5 on Apple silicon reading a small hash 200,000 times, MemoryStore achieved 362,918 reads/sec (2.8 µs/read) versus FileStore's 51,202 reads/sec (19.5 µs/read); Redis adds a socket round trip on top of similar bookkeeping. _Anyone tuning Rails cache performance can follow benchmarking write-ups like this on daily.dev._ ### Why does clearing a Redis cache store wipe my entire Redis database in Rails? A RedisCacheStore with no namespace implements clear as FLUSHDB, which empties the whole Redis database rather than just that store's keys, potentially wiping other stores, Sidekiq queues, or a colleague's development data. Setting a namespace: option on each RedisCacheStore isolates its keys so clear only deletes that store's own entries. _Rails developers debugging cache isolation issues can find practical fixes like this on daily.dev._ ## Similar posts on daily.dev - [Rails 8 Solid Cache: Database-Backed Cache Store](https://daily.dev/posts/rails-8-solid-cache-database-backed-cache-store-6lgeokcjo) · Saeloun · 0 upvotes · 0 comments - [Russian Doll Caching at the Edge](https://daily.dev/posts/russian-doll-caching-at-the-edge-6xbqzsvna) · Atomic Spin · 0 upvotes · 0 comments - [GitHub - nicolasva/solid-redis](https://daily.dev/posts/github---nicolasva-solid-redis-oosnxofle) · Ruby Flow · 0 upvotes · 0 comments - [JSON schema cache, herb:check, and more\!](https://daily.dev/posts/json-schema-cache-herb-check-and-more--tyihj9oqu) · Rails · 1 upvotes · 0 comments - [Adding multi-tenancy to a DDD Rails app](https://daily.dev/posts/adding-multi-tenancy-to-a-ddd-rails-app-cqm2w83zd) · arkency · 0 upvotes · 0 comments --- Tags: [#ruby](https://daily.dev/tags/ruby), [#rails](https://daily.dev/tags/rails), [#redis](https://daily.dev/tags/redis) [View this post on daily.dev](https://daily.dev/posts/github---igorkasyanchuk-rails-named-cache-multiple-named-cache-stores-for-rails-through-rails-cach-b8mzdnstp) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"GitHub - igorkasyanchuk/rails_named_cache: Multiple named cache stores for Rails, through Rails.cache(:name)","url":"https://daily.dev/posts/github---igorkasyanchuk-rails-named-cache-multiple-named-cache-stores-for-rails-through-rails-cach-b8mzdnstp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/github---igorkasyanchuk-rails-named-cache-multiple-named-cache-stores-for-rails-through-rails-cach-b8mzdnstp"},"datePublished":"2026-08-02T21:22:59.627Z","dateModified":"2026-09-14T07:03:45.651Z","description":"rails_named_cache is a Ruby gem that adds multiple named cache stores to Rails via `Rails.cache(:name)`. 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