How to set Lambda concurrency limit in CloudFormation template

Question

I want to limit the number of simultaneously running lambdas through cloudformation configuration file. I tried to search for it but had no luck. On the documentation page, there is no information about it. There are to approaches to set this limit: by console or by API. But how can I do it automatically on stack deploying?

Answer 1

Set Per Function Concurrency like this:

ReservedConcurrentExecutions

You can set a concurrency limit to all of your Lambda functions using this. Check out this documentation.