Pollbooth is an easy way to cache data that is automatically refreshed at a regular interval.
gem install pollboothor add the following line to your Gemfile:
gem 'pollbooth'and run bundle install
class MemberCache
include PollBooth
cache 10.seconds do
Hash[Member.all.map { |member| [member.id, member.age] }]
end
endThis will cache the age attribue using the member id as the key. So
MemberCache.lookup('jon@example.com') will return the age of the member with
email address jon@example.com.
The poller will start lazily on the first lookup but you can also start it
manually. This is recommended if populating the cache is expensive and will
compromise the first request. You should do this in the after_fork block if
you are using unicorn. Otherwise you can do it in an initializer.
MemberCache.startCopyright (C) 2013 Crowdtap
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