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localcache_with_remote_store

🕵️ Compose LocalCache with Remote Store for Ultra-Fast Reads​

Use ActiveSupport::Cache::Strategy::LocalCache in front of your remote cache to ensure each request hits the remote store only once per key, then serves subsequent reads from thread-local memory.

# config/initializers/cache_strategy.rb
remote_store = ActiveSupport::Cache.lookup_store(:mem_cache_store, "localhost:11211", namespace: "my_app_v1")
local_plus_remote = ActiveSupport::Cache::Strategy::LocalCache.new(remote_store)
Rails.application.config.cache_store = local_plus_remote

# In a controller or model
Rails.cache.fetch("user:#{current_user.id}") { current_user.to_h }
# Subsequent reads in the same request are served from LocalCache

This pattern drastically reduces round trips to your cache node, especially in views or service objects that repeatedly access the same keys.