AWS Lambda Versions

In two recent posts I showed how to warm up execution environments for your Lambda functions so you can avoid the cold start penalty when you have a burst of traffic. In this post I’ll show how to use Lambda versions and aliases to make this process easier.

With Lambda versions and aliases you can setup A/B testing for your functions. This example uses .NET 6 and Lambda Function URLs, but the same principles apply to other languages.

If you want to experiment with code variations for a Lambda function, try Lambda versions. In this post, you’ll see how to deploy a stable and experimental version of the same function.