Active Record Query Cache

# File activerecord/lib/active_record/query_cache.rb, line 42
def self.complete(pools)
  pools.each { |pool| pool.disable_query_cache! }

  if ActiveRecord.legacy_connection_handling
    ActiveRecord::Base.connection_handlers.each do |_, handler|
      handler.connection_pool_list.each do |pool|
        pool.release_connection if pool.active_connection? && !pool.connection.transaction_open?
      end
    end
  else
    ActiveRecord::Base.connection_handler.all_connection_pools.each do |pool|
      pool.release_connection if pool.active_connection? && !pool.connection.transaction_open?
    end
  end
end

# File activerecord/lib/active_record/query_cache.rb, line 58
def self.install_executor_hooks(executor = ActiveSupport::Executor)
  executor.register_hook(self)
end

# File activerecord/lib/active_record/query_cache.rb, line 28
def self.run
  pools = []

  if ActiveRecord.legacy_connection_handling
    ActiveRecord::Base.connection_handlers.each do |key, handler|
      pools.concat(handler.connection_pool_list.reject { |p| p.query_cache_enabled }.each { |p| p.enable_query_cache! })
    end
  else
    pools.concat(ActiveRecord::Base.connection_handler.all_connection_pools.reject { |p| p.query_cache_enabled }.each { |p| p.enable_query_cache! })
  end

  pools
end