Known as pub/sub, Publish/Subscribe messaging is an asynchronous service-to-service communication method used in serverless and microservices architectures. Basically, the Pub/Sub model involves:
- A publisher who sends a message
- A subscriber who receives the message via a message broker
In this article, we’ll see how pub/sub works, look at pros, cons, and use cases, and share a tutorial for setting up simple pub/sub messaging.
Basics of pub/sub messaging
With the popularity of decoupled and microservices-based applications, proper communication between components and services is crucial for overall application functionality. Pub/Sub messaging helps with this in two crucial ways:
- Allowing developers to create decoupled applications easily with a reliable communication method
- Enabling users to create event-driven architectures easily
A pub/sub model allows messages to be broadcasted asynchronously across multiple sections of the applications.
The core component that facilitates…