Message Queues for Event-Driven Systems

In real-time systems, applications often need to communicate efficiently without directly waiting for each other. This is where message queues come in!

A message queue is a software component that allows different applications or parts of an application to communicate asynchronously by sending and receiving messages.

Traditional systems often use a request-response model, where one component waits for another to finish. But for real-time, high-throughput needs, this can be slow and inefficient.

Event-driven systems react to "events" (like a new user signup or an order placed). Message queues are key to enabling this pattern, allowing components to publish events and others to subscribe.