How to Minimize AWS Lambda Cold Starts

Serverless architecture is the new kid on the block, and according to a recent surveyby Serverless, Inc., a vast majority of developers will start using it by the end of the year. The serverless paradigm involves running code in the cloud without managing any servers, allowing you to build business logic and create value without ever thinking about the infrastructure or underlying software. Essentially, it lets you focus on your code.

Serverless does not only cover AWS Lambda and other FaaS providers, but basically everything you can use to run code, host files, and store images and data. This means that you, as an engineer, don’t need to manage, scale, or operate any servers whatsoever. And here’s the icing on the cake: you only pay for the time your code is running!

Although serverless offers many benefits, there are still some pitfalls, such as latency. In this article, we’ll discuss how to minimize latency in AWS Lambda. This dreaded phenomenon is caused by cold starts, which are, by definition, slower initial responses from your serverless APIs.

Before we begin, let’s dig deeper into what FaaS is and how it works.