code: def get_command_response_from_cache(self, device_id, command, command2):
          
          key = self.create_key_from_command(command, command2)
          command_cache = self.get_cache_from_file(device_id)
  
          if device_id not in command_cache:
              command_cache[device_id] = {}
              return False
          elif key not in command_cache[device_id]:
              return False
  
          response = command_cache[device_id][key]
          expired = False
          if response['ttl'] < int(time()):
              self.logger.info("cache expired for device %s", device_id)
              expired = True
  
              if os.path.exists(LOCK_FILE):
                  self.logger.info("cache locked - will wait to rebuild %s", device_id)
              else:
                  self.logger.info("cache unlocked - will rebuild %s", device_id)
                  newpid = os.fork()
                  if newpid == 0:
                      self.rebuild_cache(device_id, command, command2)
  
          if expired:
              self.logger.info("returning expired cached device status %s", device_id)
          else:
              self.logger.info("returning unexpired cached device status %s", device_id)
  
          return response['response']
docs: Gets response