Clearing Memcached at Capistrano Deployment

It’s a two step process:

  1. Create a rake task (in lib/tasks/clear_memcached.rake for example):

namespace :cache do
desc 'Clear memcache'
 task :clear => :environment do
ActionController::Base.cache_store.clear
end
end
  1. In deploy.rb add the following:
 namespace :cache do
	desc "Clear memcach after deployment"
 task :clear, :roles => :app do
 run "cd #{current_release} && rake cache:clear RAILS_ENV=production"
 end
end

and (depending on your task chain):


after "deploy:update_code", "cache:clear"

Hope it helps.

Posted: 12 July 2010