Question

What does the log file of a lambda function contains?

Answer 1

A simple lambda function contains the following data:-

START RequestId:  

Version: $LATEST

The message from the function to be printed, i.e. event{'key1': 'This will be printed in logs'}

END RequestId:

REPORT RequestId:
Duration: time in ms
Billed Duration: 100 ms
Memory Size: 128 MB
Max Memory Used: 20 MB

Hope this helps