Lê Thanh SangSenior Developer at GO1

Getting Started with Serverless Architectures

November 19, 2016

1. Welcome2. What is Serverless? Benefits of Serverless? 4. Demo: Building note application 5. Q&A

Meetup Agenda

Who Am I?

A husband Working for GO1 from 2013 as Senior Developer Current leading the iTeams (Integrations &

Infrastructure) About GO1: “We help hundreds of organizations

provide training for over 150,000 users”www.go1.com

What is Serverless?

Provisioning

and Utilization

Operations

and Management

Scaling Availability and

Fault Tolerance

Removes the need for….

Benefits of Serverless?

Provisioning

and Utilization

Operations

and Management

Scaling Availability and

Fault Tolerance

Which leads to….

Low Cost Simple Low Latency Scalable Reliable

Platform of Serverless Products

Storage DatabaseCompute

Messaging and QueuesGateways

User Management

Internet of Things

Machine LearningStreaming Analytics

Real-time Processing

Streams

Files

ETL (Extract, Transform, Load)

IoT Backends

Web Application Serverless Architecture

Anatomy of a Web Application

What makes up a web application?

• Let’s break it down…

Serverless Web Application

Where did all the servers go?

Static Website Hosting on S3 - refresher

Specify an index document (i.e. index.html) Specify an error document Objects publicly readable Supports redirects

All Requests Conditional

bucket with objects

API Gateway - refresher

Create Configure Publish

Maintain Monitor Secure

API Gateway – Stage Variables

Key/Value pairs used for configuration Used for different stages of API Specify a Lambda function name Pass to backend

Lambda

Serverless, event-driven compute Code is: NodeJS, Python, JVM based Specify memory allocated Determine what invokes the functions

API Gateway, S3, DynamoDB, Kinesis, SNS, SES, Cognito, Cloudwatch Logs, Cloudwatch Events, CloudFormation, Config, Scheduled Events

Lambda – Versioning and Aliases

• Versioning ARN for each one (immutable) Versions of functions for Dev, Staging, Prod

• Aliases Point to a version Have an ARN also Event sources point to Alias ARNs

Lambda – Dynamic Configuration

• One option:

Pull Configs from DDB Write values to global vars Code uses global vars

Lambda Function

Amazon DynamoDB

DynamoDB - refresher

NoSQL database Keys: Hash Key and (optional) Range Key Tips:

Plan your keys Think about your queries

Demo(https://github.com/sanglt/aws-

serverless-note-demo)

Demo App Architecture

AWS Lambda

Functionsweb browser

Amazon S3

Dynamic Content

Sta

tic C

onte

nt

Amazon DynamoDB

Amazon API Gateway

1

Architect to be Serverless

• Fully Managed No provisioning Zero administration High availability

• Developer Productivity Focus on the code that

matters Innovate rapidly Reduce time to market

• Continuous Scaling Automatically Scale up and scale down

References

• http://www.slideshare.net/AmazonWebServices/getting-started-with-serverless-architectures-august-2016-monthly-webinar-series

• https://github.com/serverless/serverless• http://

docs.aws.amazon.com/amazondynamodb/latest/gettingstartedguide/GettingStarted.NodeJs.html

Q&A

Thank You

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