Lambda

Question 1

AWS services that provide Event Source Mappings for Lambda

Answer 1

Dynamo DB
Kinesis
Amazon MQ
Amazon Managed Streaming for Apache Kafka
SQS

Question 2

Differences between Lambda synchronous, asynchronous, Event Source Mapping

Answer 2

Both synchronous and asynchronous are (push) invocations, whereas Event Source Mapping requires polling from the Lambda function

Question 3

How to manually throttle a Lambda function

Answer 3

Set “Reserved Concurrency” to 0

Question 4

How does Lambda throttle behavior differ for synchronous vs. asynchronous invocations?

Answer 4

Synchronous: 429 returnThrottleError

Asynchronous: automatic retry —–> DLQ