Before you start you will need to have

1. Basic knowledge of Serverless
2. Node.js and npm installed in your system
3. Amazon web services (AWS) account

You can refer this blog if you are not familiar with the basics of serverless

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Project Setup

We will create a project folder and initialize an npm project. Create a new serverless service in the project folder.

mkdir my-serverless-project
cd my-serverless-project
npm init -y
serverless create --template aws-nodejs

The Serverless framework generates a boilerplate for the application. Out of these, handler.js and serverless.yml are significant.

Now we will install [serverless-offline](https://www.npmjs.com/package/serverless-offline) which is a plugin used to run the Serverless framework on the localhost. This will emulate the Lambda and API Gateway on our local machine to speed up your development cycles. Otherwise, we will have to deploy the service to AWS every time to test a change.

npm install -D serverless-offline

Modify the serverless.yml file to include the plugin.

service:
  name: serverless
plugins:
  - serverless-offline
provider:
  name: aws
  runtime: nodejs12.x
  apiGateway:
    minimumCompressionSize: 1024
  environment:
    AWS_NODEJS_CONNECTION_REUSE_ENABLED: 1
functions:
  hello:
    handler: handler.hello
    events:
      - http:
          method: get
          path: /

#coding #programming #serverless #aws #aws-lambda