Going ServerlessWITH AWS LAMBDA + NODEJS

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Serverless

“A New Cloud Computing Trend That Changes The Way You Think About

Writing And Maintaining Applications”

Tomasz JanczukChief Architect for Webtasks at Auth0

The Pieces

Lambda

EC2

EC2 ContainerService

ElasticBeanstalk

Lambda

What Lambda Really Is

Why You Should Use Lambda

Auto Scaling

Secure

Autoscale

Autoscale All The Way!

2010

2014 AWS Lambda

2016 Google Cloud FunctionsMicrosoft Azure Functions

2015 Webtask RadTonicDev

Functions Service Timeline

API Gateway

Databases

Other Services

“Serverless” Infrastructure

Use Cases

Scalable API

Scheduled Tasks

Indexing and Sync

Automation and iOT

Audit and Notification

Pricing

Free Tier

1M Request3M Seconds

of compute time

Lambda FunctionOur very first

Getting Started

Choose Your Weapon

Triggers

Write Your Code

1 'use strict'; 2 console.log('Loading function'); 3 4 exports.handler = (event, context, callback) => { 5 let min = 1 6 let max = 10 7 8 let random_number = Math.floor(Math.random() * 9 max) + min 10 let mark = "" 11 for (let i=min; i<random_number; i ++) 12 mark = mark + "!" 13 14 callback(null, "Hello Bandung" + mark) 15 }

Zooming in to code…

Setting it up!

Test it

Connecting Lambda To API Gateway

Create New API

Connect To Lambda Function

Publish it

Test it

Slack BotServerless

Add Slack WebHook Config

The Code 1 const AWS = require('aws-sdk') 2 const db = new AWS.DynamoDB.DocumentClient({region: 'ap-southeast-1'}) 3 4 exports.handler = (event, context, callback) => { 5 console.log(event) 6 if (event.user_name) { 7 const params = { 8 Item: { 9 date: Date.now(), 10 user_name: event.user_name 11 }, 12 TableName: 'report_log' 13 } 14 db.put(params, (err, data) => { 15 context.succeed({ 16 "response_type": "in_channel", 17 "text": "Hi " + event.user_name +"! It's time for standup meeting." 18 }) 19 }) 20 } 21 };

Setting Up The Database

Setting Up The Database

Permission To Use The DB

The Trigger

Publish it

Hook it

Hook it

Run it

Our Autoscaling And Maintenance Free Bot Is Finished

Now Let’s Build Skynet!

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