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Ruby gem that allows people to memoize to memcache
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test Test case for changing the default queue May 8, 2014
Gemfile initial Apr 22, 2012
Rakefile A send_later only version of resque, with the giant hacky hash of whe… May 8, 2014


Patella is a robust implementation of send_later for Rails applications using Resque. It supports:

  • Sending to specific queues on a per-call basis
  • A global on/off switch for send_later
  • Sensible defaults for the default Rails environments (send_later is disabled in development and test)

What happened to memoization into memcached etc?

Patella was originally a gem for memoizing expensive method calls in Rails apps in the background and loading them asynchronously. Jeff Dwyer did a RailsConf 2012 talk about it:


Add this line to your application's Gemfile:

gem 'patella'

And then execute:

$ bundle

Or install it yourself as:

$ gem install patella


post = Post.find(params[:id])
post.send_later(:slow_calculation_with_two_parameters, 5, "jdwyah!")
post.send_later_on_queue(:hashing, :hash_content, 8675309)

Post.send_later_on_queue(:high_priority, :class_method_with_a_parameter, 50)

Patella::SendLater is the module that provides the send_later and send_later_on_queue methods. It's included by default in all ActiveRecord::Base subclasses, but you can include it in any class that implements the #id and .find methods.

By default, send_later will enqueue jobs on a queue called "send_later". You can alter this default:

Patella::SendLaterWorker.default_queue = :my_custom_queue


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
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