Learn AWS Serverless Computing

Reuse and optimization

In this section, we are going to learn how to leverage the execution model to our advantage. We'll also find out about a thing called cold starts, and why we need to be considerate of them.

In the early days of the AWS Lambda service, we could make educated estimates about the underlying implementation of the infrastructure. From this introspection, we were able to postulate that our Lambda code was running within some sort of container. Each time we would trigger a function to be executed, an invisible orchestration service would have to find a physical host with capacity, schedule the container for deployment, download and deploy our .zip package from S3, start the container, and manage it until it was terminated. ...