How to Create a Serverless Node.js REST API

How to Create a Serverless Node.js REST API

Interested in how to quickly build manageable serverless REST APIs? In this article, I will be demonstrating how to accomplish this for NodeJS REST APIs with the Serverless Framework. For this demonstration, we will be building a simple API that manages the users for our demonstration application. In this tutorial, you'll see How to Create a Serverless Node.js REST API. A guide for creating a REST API with the Serverless Framework and DynamoDB

Interested in how to quickly build manageable serverless REST APIs? In this article, I will be demonstrating how to accomplish this for NodeJS REST APIs with the Serverless Framework. For this demonstration, we will be building a simple API that manages the users for our demonstration application. To follow along you should have the pre-requisites:

  • A good grasp of JavaScript fundamentals
  • An AWS account and developer credentials
  • Node and npm installed locally

Serverless

I think at this point that serverless computing has been around long enough that we are all well aware that serverless doesn’t mean there aren’t any servers. It just means you don’t have to worry about managing and maintaining your own servers. And if you’ve been unfortunate enough to have to do that then you know how painful that can be at times.

The pricing model is also good for new or lightly used applications because you are charged by actual use rather than for reserved capacity. So let’s say your API services 1000 requests a month. You are only going to be charged for the computing time it took to run those requests. Alternatively, if you are deploying your application on an EC2 virtual machine you will be charged for the month of having that VM running 24/7 to serve your API.

Serverless also handles all of the hardware scaling automatically without you having to intervene at all. So if your API is getting hit particularly hard during a holiday shopping period or something along those lines you don’t have to worry about scaling up to more VM instances or upgrading hardware. All of that is managed for you within serverless services.

All cloud providers have some form of serverless service available. In this article, we will be using AWS’s Lambda to deploy our serverless REST API.

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