AWS › Amazon SQS (Simple Queue Service)
How does SQS integrate with Lambda for event driven message processing, including batching behavior?
AdvancedAnswer
Lambda can be configured with an SQS queue as an event source, automatically polling the queue and invoking your function with a batch of messages whenever they become available, and you can configure batch size and batching window settings to control how many messages are grouped into a single invocation, letting you balance between processing latency and the efficiency of handling multiple messages together in one function execution.
aws lambda create-event-source-mapping --function-name processOrders --event-source-arn arn:aws:sqs:us-east-1:123456789012:OrderQueue --batch-size 10Real-world example An order processing pipeline configures its Lambda function to process up to ten SQS messages per invocation, reducing the number of Lambda invocations needed compared to processing one message at a time, while still keeping processing latency low.