SERVERLESS ARCHITECTURES (WITH AWS INFRASTRUCTURE) Niko Kbler - - PowerPoint PPT Presentation

ARCHITECTURES

(WITH INFRASTRUCTURE)

Niko Köbler Soware-Architect, Developer & Trainer | |

SERVERLESS

AWS

niko@n-k.de www.n-k.de @dasniko

@dasniko

DISCLAIMER

This is silver bullet, no standard, but opinionated! NO

SERVERLESS

SERVER ? WHAT

This is what actually mean... serverless

Serverless is about the

• f servers.

Build and run applications servers. management without thinking about

OF COMPUTING

Physical Servers in datacenters Virtual Machines in datacenters Virtual Machines in Cloud Containers on Virtual Machines Serverless as the unit of compute

EVOLUTION

COMPUTE

Functions are the unit of deployment and scaling. No machines, VMs, or containers visible in the programming model. Permanent storage lives elsewhere. Scales per request; Users cannot over- or under-provision capacity. Never pay for idle (no cold servers/containers or their costs). Implicitly fault-tolerant because functions can run anywhere. BYOC - Bring Your Own Code. Metrics and logging are a universal right.

SERVERLESS MANIFESTO

Source: various AWS presentations

?

Unit of deployment and scale!

PAAS

PaaS FaaS

is as

DevOps NoOps vs. vs.

AWS LAMBDA

AWS

Event Driven JVM-based languages (Java 8), JavaScript (Node.js), Python, C#, (more to come) Versions, Encrypted Environment Variables, Step Functions Pay as you use - in 100ms blocks (e.g. 100ms w/ 128MB memory = USD 0.000000208)

LAMBDA

AWS

EXAMPLE

LAMBDA

NODE

exports.handler = (event, context) => { console.log('Received event:', JSON.stringify(event)); }

AWS

EXAMPLE

LAMBDA

JAVA

public class ImageProcessor implements RequestHandler<S3Event, Void> { @Override public Void handleRequest(S3Event s3Event, Context context) { // get the S3 event data from the event request S3EventNotification.S3EventNotificationRecord record = s3Event.getRecords().get(0); // your code goes here... // return an object with specified type (see class generics) return null; } }

AWS EVENTS

S3 Cloud Watch Config AWS IoT Cognito SES API Gateway

(no complete list)

LAMBDA

DynamoDB Cloud Formation Kinesis Code Commit SNS Echo / Alexa Cron

GATEWAY API

GATEWAY

"Reverse Proxy" hides possible multiple service calls (aka "service composition", ESB?) distributes requests to proper service instances "Mock" services Caching, Throttling, DDoS attack protection, etc.

API

API GATEWAY NETFLIX

GATEWAY

"Reverse Proxy" hides possible multiple service calls (aka "service composition", ESB?) distributes requests to proper service instances "Mock" services Caching, Throttling, DDoS attack protection, etc.

API

GATEWAY

AUTHENTICATION / AUTHORIZATION

AWS Cognito / STS Custom Authorizer (Lambda Function, returning IAM policies)

API

API GATEWAY AUTHORIZATION

GATEWAY API

DYNAMODB

DYNAMO

Fully Managed NoSQL Data Store Schemaless Data Model Seamless Scalabiltiy, "no limits" Pay by Read-/Write-Capacity-Units

DB

Example

CASES USE

SERVERLESS ARCHITECTURE WEB

SERVERLESS ARCHITECTURE WEB

API Gateway with , Push and SNS SQS

SKILLS BOTS (CHAT/VOICE) ALEXA

TESTING

TESTING

Functions are easy to test, stateless and little to no dependencies

UNIT TESTS

TESTING

Environment, Infrastructure

• max. 1024 of running processes/threads
• max. 100 concurrent Lambdas per Region

no remote debugging

INTEGRATION TESTS

COMPETITORS?

GOOGLE CLOUD FUNCTIONS

JavaScript

COMPETITOR

MICROSOFT AZURE FUNCTIONS

JavaScript, C#, Python, PHP

COMPETITOR

ON ? PREMISE

COMPETITOR

IBM BLUEMIX

Bluemix Cloud & OnPremise Open Source / Apache License v2.0 JavaScript (Node.js), Python and... Swi! Docker Support Function-Chaining

OPENWHISK

IBM

LET'S GET STARTED

OPENWHISK

$ git clone https://github.com/openwhisk/openwhisk.git $ cd openwhisk/tools/vagrant $ vagrant up

IBM

JAVASCRIPT EXAMPLE

Create the action in OpenWhisk Run the action Result

OPENWHISK

function main(params) { return {payload: 'Hello, ' + params.name}; } $ wsk action create hello hello.js $ wsk action invoke hello --blocking --result --param name Niko { "payload": "Hello, Niko" }

Overview: Documentation, Logging & Monitoring, Metrics ! (typical things for distributed environments) Cloud Provider Binding / Dependency: APIs, Portability, Costs, SLAs

DRAWBACKS

? WANT TO START?

Give a try! Manages all the Cloud-Resources and Deployment.

CURIOUS

serverless.com

SERVERLESS.COM

# Install serverless globally $ npm install serverless -g # Create an AWS Lamdba function in Node.js $ serverless create --template aws-nodejs # Deploy to live AWS account $ serverless deploy # Function deployed! $ http://api.amazon.com/users/update

BUT POWERFUL

No need to run/manage Application Servers Fast results, minimal effort, minimal TTM(!) Low costs, minimal financial risk Automatic Scalabiltiy and Availability "out-of-the-box"

SERVERLESS

THANK !

ANY ?

Slides: Niko Köbler Soware-Architect, Developer & Trainer | |

YOU

QUESTIONS

http://bit.ly/serverless-slides niko@n-k.de www.n-k.de @dasniko

LINKS

AWS Lambda: Amazon API Gateway: Google Cloud Functions: Microso Azure Functions: IBM OpenWhisk: IBM OpenWhisk SourceCode: Serverless Framework: https://aws.amazon.com/lambda https://aws.amazon.com/api- gateway https://cloud.google.com/functions https://azure.microso.com/services/functions https://developer.ibm.com/openwhisk https://github.com/openwhisk/openwhisk http://serverless.com