What does it mean that it’s all just one Lambda function? Most importantly for us is that we’ll only have one cold start. What’s even cooler is that this is all packaged into a single function. It’ll behave just as the local instance did. Would you believe me that this is all that’s required? Well it is. We’re grabbing the dev branch where I’ve set up all the necessary modules and configurations. My point for taking an existing Express API is to show how easy it is to migrate it to using Serverless.įirst let’s clone the repo to our machine. It’s from one of my previous articles you may have read. I’ve taken the liberty of creating a small repo with an Express REST API.

Otherwise, if you more prefer screen casts, here’s a course where I explained it through video. If not, please check this out and follow along the steps to set up an installation of the Serverless framework. I’ll expect you already have an AWS account and an installation of the Serverless framework set up and working on your machine. The goal will be to take an existing Express API and edit it slightly to be deployed to AWS through the Serverless framework. So, if you ever make it big and get featured on Tech Crunch, the influx of users won’t break all your servers, and leave your users hanging. With the auto-scaling properties of using Serverless Architecture you can rest assured it will always serve all the users hitting your API. If you have an app in production, you can cut costs drastically. I’ll show you how to use the code you’re already used to, and apply it to a Serverless environment. Shifting your mindset to using Serverless Architecture is not a small feat. Learning is hard, even if you’re a dev, and used to learning new things.

I’m not in any way an above average developer. Learning new things is not easy, believe me.

Ew, the terminal! How do you exit Vim again? *shivers* You’re a developer, why should you need to get your hands dirty with the horror of the command line. Many of the use cases make sense to let the cloud provider handle the server management, scaling and up time. They’re just in some undisclosed server farm somewhere floating in the cloud. Digging into the various pros and cons of not having dedicated servers, or instances you can call your own. I’ve dabbled a fair share in the dark arts of Serverless. You can host and scale apps automagically. It's like serverless but for running entire back ends. NEWABOUT PAGE Zeet is sponsoring this blogpost for the next month.

Npm install serverless --save --dev