== cache_fu

A rewrite of acts_as_cached.

== Changes from Chis Wanstrath's Repo (2008-06-29) Rohith Ravi (entombedvirus [at] gmail)

- Extended the work of kykim (http://github.com/kykim/cache_fu/tree) to support cached associations.

- When User.has_many_cached :cats, you can now call user.cached_cats to retrieve a copy of the user's cats, while caching the cat
  id list to memcache.

- When individual cat objects are saved/destroyed, corresponding user's cache is updated so that cached associations won't be stale.

- has_many :through relationships are also supported. For example: When a User.has_many_cached :cats, :through => :ownerships,
  Saving and destroying Ownership objects will update the corresponding User's cache.
  
- Similarly, has_one_cached and belongs_to_cached is also supported.

== Usage

class User < ActiveRecord::Base
  has_many_cached :cats
end

class Cat < ActiveRecord::Base
  belongs_to_cached :user
end


./script/console

>> u = User.find(:first)
>> u.cached_cats
>> u.cached_cats.first.cached_user

== Changes from acts_as_cached 1

- You can no longer set a 'ttl' method on a class.  Instead,
  pass :ttl to acts_as_cached:
    >> acts_as_cached :ttl => 15.minutes

- The is_cached? method is aliased as cached?

- set_cache on an instance can take a ttl
    >> @story.set_cache(15.days)


Chris Wanstrath [ chris[at]ozmm[dot]org ]