Will the Guru

Asynchronous messaging pattern is a pattern that utilizes message queue.

Types

#1. Competing consumers

• Multiple consumers try to compete for the message from the queue.
• This would work well if the workload can be divided into independent tasks and where the tasks can be run asynchronously and in parallel

#2. Request/Response messaging

• Uses another queue that will be used as a callback

#3. Priority queue

• If each task has their own priority, the task queue can be a priority queue
  • With native support, we can use just a single queue, but if it doesn’t support, we will need multiple queues per priority

#4. Clain check

• If the message itself is too large(like video, image, etc), we can
  1. Upload the large data(video file) to the shared storage like S3.
  2. Send only metadata and reference of the storage to the queue
• Or we may split the large data into small ones and merge from the consumer side.

Reference

• https://leetcode.com/explore/interview/card/system-design-for-interviews-and-beyond/724/fundamentals-of-reliable-scalable-and-fast-communi/4754/