Implement APIs fastest with Serverless Flamework

As the title says, the fastest deployment. Use .js 12.x runtime.

Prerequisites
1. Serverless Framework
Prepare
implementation
Summary

Prerequisites

Serverless Framework

Tools for configuring and deploying serverless applications.

Serverless: Zero-Friction Serverless Apps On AWS Lambda & Beyond.

Easily build auto-scaling, low-overhead applications on AWS Lambda, API Gateway, DynamoDB, and other managed services wi...

Prepare

$ npm install -g serverless

implementation

1. Create a project

$ serverless create --template aws-nodejs --name my-project --path my-project
...
$ cd my-project
$ ls
handler.js serverless.yml

When you create a project, two files are generated.

The contents of each file are like this.

'use strict';
module.exports.hello = async event => {
  return {
    statusCode: 200,
    body: JSON.stringify(
      {
        message: 'Go Serverless v1.0! Your function executed successfully!',
        input: event,
      },
      null,
      2
    ),
  };
  (Comment part omitted)
};

# (comments omitted)
service: my-project
# (comments omitted)
provider:
  name: aws
  runtime: nodejs12.x
# (comments omitted)
functions:
  hello:
    handler: handler.hello
# (comments omitted)

2. Implement an API that returns the simplest JSON

If the .js just returns what's written in the instructions, you can implement serverless.yml with just a little fiddle.

(omitted)
provider:
  name: aws
  runtime: nodejs12.x
+ region: ap-northeast-1
+ profile: test
(omitted)
functions:
  hello:
    handler: handler.hello
+ events:
+ - http: GET hello
(omitted)

Note: Profile for deploying to AWS. Choose from ~/.aws/creditals to use. (test this time)

For credital, see Formulas and more:

の設定 AWS CLI - AWS Command Line Interface

がとやり取り AWS CLI するために使用する設定を設定します AWS。

3. Deploy

$ serverless deploy
(omitted)
api keys:
  None
endpoints:
  GET - https:// (random).execute-api.ap-northeast-1.amazonaws.com/dev/hello
(omitted)

Now it's com
plete. https:// you access the execute-api.ap-northeast-1.amazonaws.com/dev/hello (random). .js the contents of the handler file are returned in JSON format.

Summary

Super easy!