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Published 20 hours ago • verified publisher icon apex

Lambda throttling (reserved concurrency)

Open SashaSirotkin opened this issue 7 years ago • 2 comments

Prerequisites

  • [x] I am running the latest version. (up upgrade)
  • [x] I searched to see if the issue already exists.
  • [ ] I inspected the verbose debug output with the -v, --verbose flag.
  • [x] Are you an Up Pro subscriber?

Description

Add lamda.reserved_concurrency to up.json.

AWS announced reserved concurrency in November 2017. This "reservation" allows you to limit the number of concurrent executions of a lambda function. This is helpful for small projects which are using underpowered RDS databases with limited connections.

I took a brief glance into the GO AWS SDK. Reserved currency is not defined as a value in CreateFunctionInput and is instead a separate call to PutFunctionConcurrency.

According to the documentation it just returns a 429 error when throttling requests from API Gateway.

Steps to Reproduce

N/A

SashaSirotkin avatar Sep 17 '18 03:09 SashaSirotkin

Definitely would like to get this in! Shame that it's an extra API call but I'll take a look at adding it

tj avatar Sep 18 '18 02:09 tj

This would help out with one of our use-cases too where we're using Chromium on lambda.

j avatar Nov 09 '18 19:11 j