Invoking other Lambda functions

[jwulf]

What's the best way to invoke Lambda functions from JAWS? Should I write something to invoke it via REST, or can I use Lambda.invoke?

[mbreton]

IMHO if you want invoke a lambda from a Web app, or mobile app the best way would be to use the amazon gateway to build a pseudo Rest API. In this manner, you have less coupling between your client app and the back-end. BTW in Jaws you will have a swagger json descriptor to aws gateway generator soon. (cf. #41)

[jwulf]

Sorry, I meant invoking a lambda from inside another lambda.

[mbreton]

Ok, In this case use the API SDK directly seems a better idea to avoid the HTTP overload.

[austencollins]

@jwulf Use the AWS SDK to invoke a lambda function from within another lambda function for best performance.

[akleiber]

Just in case somebody wants some response from AWS directly - invoking one lambda from another lambda via the AWS SDK is also mentioned by AWS in this blog post: https://aws.amazon.com/blogs/developer/invoking-aws-lambda-functions-from-java/