#Memcached
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Dynamic Site as fast as a Static Generated One with Raptor
The page shows how a Rails app can serve public pages with static-like speed by combining ETags, caching, Memcached, and Passenger 5, with load tests showing stable response times.
How key-based cache expiration works
The post explains key-based cache expiration as a way to avoid manual cache invalidation by making the cache key change with the object’s updated_at timestamp, so old entries become disposable and stale data is avoided.
Caching Strategies for Rails
The page lays out when to use page, action, fragment, and low-level caching in Rails on Heroku, and recommends memcached, Varnish, and Rails.cache for different kinds of slow content.