Overview
An event bus (e.g., Amazon EventBridge, Google Cloud Eventarc) acts as a central hub for events. It receives events from various sources and routes them to targets (like Lambda functions or SQS queues) based on rules.
Key Features
- Decoupling: Producers and consumers of events don't need to know about each other.
- Filtering: Rules can be defined to only send specific events to specific targets.
- SaaS Integration: Can ingest events directly from third-party services like Zendesk, Shopify, or PagerDuty.
- Schema Registry: Helps developers manage the structure of events.
Use Cases
- Building event-driven architectures.
- Triggering workflows based on system changes.
- Integrating disparate microservices.