DynamoDB tables replication blocked with lambda out of memory

[RichardLeeY]

We build CDC solution on AWS Account.
For some frequently updated DDB tables , we find that the target dynamoDB table has no data imported. We checked the lambda logs . The logs show as follow

As we can see, the lambda default 128M memory are used up. we update lambda memory size by aws cli and the replication recovered.

aws lambda update-function-configuration \ --function-name my-function \ --memory-size 256

Solutions Suggestion:
1.Expose lambda Memory size as parameter in sam template.

2.furthor more, It will be better if we add sns notification with lambda error logs ,So that people can receive alarm mail in time.