Back to Catalog
Cloud
aws
Publish-Subscribe
Enable applications to announce events to multiple consumers asynchronously
Intent & Description
The Publish-Subscribe pattern enables an application to announce events to multiple consumers asynchronously, without coupling senders to receivers. Publishers send messages to topics, and subscribers receive messages from topics they are interested in. This provides loose coupling between components and enables fan-out messaging.
Real-world Use Case
Use when you need to send the same message to multiple consumers or when you want to decouple publishers from subscribers in event-driven architectures.
Source
Advantages
- Loose coupling between publishers and subscribers
- Fan-out messaging capability
- Scalable to many consumers
- Natural fit for event-driven architectures
Disadvantages
- Message ordering challenges
- No guaranteed delivery
- Requires message broker infrastructure