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Cache Digests
The cache_digests gem (also included in Rails 4) will automatically add a digest to the fragment cache key based on the template. If a template changes the cache will auto-expire. But watch out for the gotchas!
(7 minutes)
Autocomplete Search Terms
Learn how to add autocompletion to a search form and improve performance using Rack middleware, caching and switching from SQL to Redis.
(17 minutes)
Memcached & Dalli
Memcached is an excellent cache store, and Dalli is the best way to interact with it through Ruby. Here I show various ways to use Memcached in a Rails app including how to set it up in production.
(12 minutes)
Touch and Cache
Rails 2.3.3 brings us a new feature called "touch". See how to use this to auto-expire associated caches in this episode.
(6 minutes)
Caching in Rails 2.1
Rails 2.1 brings some new caching features which makes it very easy to cache any values including models. See how in this episode.
(8 minutes)