Message queue

Imagine you have a bunch of toys that you want to share with your friends. However, you can only give one toy at a time and everyone wants to play with you. So, you decide to make a queue.

A queue is like a line of people waiting for their turn. In this case, it's a line of your friends waiting for their turn to play with your toys. Each friend puts their name on a list and waits in the line until it's their turn.

Similarly, a message queue is like a line of messages waiting to be processed. A computer program can receive a lot of messages at the same time, but it can only handle one message at a time. So, the messages are put in a queue and wait in line until they can be processed.

The messages can be anything that the program needs to handle, such as requests for information or commands to perform actions. The program takes the messages one at a time from the front of the queue and processes them. Once a message is processed, it's removed from the queue and the next one can be processed.

Using a message queue helps the program handle a lot of messages without getting overwhelmed. It also ensures that each message is processed in order, one at a time, just like your friends playing with your toys.