rails-cache-memo.rb

# ref. https://railsguides.jp/caching_with_rails.html
# ref. https://api.rubyonrails.org/classes/ActiveSupport/Cache/Store.html
 
# write/read/fetch
Rails.cache.write('test_cache_key', Time.zone.now, expires_in: 10.seconds)
Rails.cache.read('test_cache_key', expires_in: 10.seconds)
Rails.cache.fetch('test_cache_key', expires_in: 10.seconds) { Time.zone.now }
 
class Model
  def self.hoge
    expires_in = Time.zone.now.end_of_day - Time.zone.now
    cache_key = "Model.hoge/#{Time.zone.today}"
    Rails.cache.fetch(cache_key, expires_in: expires_in, skip_nil: true) do
      Time.zone.now
    end
  end
end
Model.hoge
 
# Clear cache
Rails.cache.clear
# $ bin/rails r 'Rails.cache.clear'
 
# Toggle development mode caching on/off
# $ bin/rails dev:cache