Maximum size of payload for an AWS Lambda Request / Event?

Question

What is the max payload for a REST post request to AWS lamda?

This question is essentially this question, but for AWS Lambda HTTP events.

Also does AWS Gateway add any restriction of payload size?

Answer 1

Lambda has a strict payload limit size of 6MB. If you want to upload more than 6MB you can do like this,

Lambda (Create S3 Signed URL) --> Upload to S3 --> Trigger from S3 to lambda --> Process in lambda

Lambda Limits:

https://docs.aws.amazon.com/lambda/latest/dg/limits.html

API Gateway Limits:

https://docs.aws.amazon.com/apigateway/latest/developerguide/limits.html

Hope it helps.