call

# File activerecord/lib/active_record/query_cache.rb, line 58
    def call(env)
      old = ActiveRecord::Base.connection.query_cache_enabled
      ActiveRecord::Base.connection.enable_query_cache!

      status, headers, body = @app.call(env)
      [status, headers, BodyProxy.new(old, body)]
    rescue Exception => e
      ActiveRecord::Base.connection.clear_query_cache
      unless old
        ActiveRecord::Base.connection.disable_query_cache!
      end
      raise e
    end