Message Queue vs Task Queue difference

Question

I wonder what is the difference between them. Are they describing the same thing?

Is Google App Engine Service Task Queue is an implementation of Message Queue?

Answer 1

If you think in terms of browser’s JavaScript runtime environment or Nodejs JavaScript runtime environment, the answer is:

The difference between the message queue and the micro-task queue (such as Promises is) the micro-task queue has a higher priority than the message queue, which means that Promise task inside the micro-task queue will be executed before the callbacks inside the message queue.