I have a AWS Lambda function that creates an object from a s3 call in cold start. I then hold the object in the cache while the function is warm to keep load times down. W
I made an Answer based on my comment and verification from @DejanVasic
aws lambda update-function-configuration --function-name "myLambda" --description "foo"
This will force the next invokation of the lambda to "cold start".
To verify:
@timestamp, @message | sort @timestamp desc | limit 1000 | filter @message like "cold_start:true"