The Fan-Out Pattern with SNS
Learn the fan-out messaging pattern using Amazon SNS to deliver one event to many independent Lambda consumers in parallel.
What is Fan-Out?
Fan-out means a single event is delivered to many subscribers at once, each processing it independently and in parallel.
Why Not Call Each Directly?
Calling each downstream function from your producer tightly couples them. Adding a consumer means changing the producer. Fan-out decouples this.
All lessons in this course
- Asynchronous Lambda Invocations
- Dead Letter Queues (DLQ) for Failures
- Orchestrating with AWS Step Functions
- The Fan-Out Pattern with SNS