Cache fetch

cache_fetch.rb

# This is a handy pattern for handling slow computations like API calls

def slow_results
  Rails.cache.fetch("slow_api_results", expires_in: 10.minutes) do
    slow_api_call
  end
end

slow_results # Takes a few seconds to load first time
# => "Lorem ipsum..."
slow_results # Loads from cache (and so very quickly) second time
# => "Lorem ipsum..."