Common Lambda Triggers
~10 min read
The event sources that most commonly invoke a Lambda function in real applications.
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Key points
- •API Gateway: synchronous HTTP request/response, serverless API backends
- •S3 events: react to file uploads/changes automatically
- •SQS/SNS: asynchronous decoupled processing, queue-based with retries, or pub/sub fan-out
- •DynamoDB Streams: react to table changes, e.g. to sync a search index
- •EventBridge: scheduled/cron jobs and general event-bus-style architectures