serverless architectures - entwicklertag · ser verless is about the of ser vers. build and run...

ARCHITECTURES(WITH INFRASTRUCTURE)

Niko Köbler So�ware-Architect, Developer & Trainer

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SERVERLESS

AWS

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

@dasniko

DISCLAIMERThis is silver bullet,

no standard, but opinionated!

NO

SERVERLESS

SERVER ?WHAT

This is what actually mean...serverless

Serverless is about the of servers.

Build and run applications servers.

management

without thinkingabout

OF COMPUTINGPhysical Servers in datacentersVirtual Machines in datacentersVirtual Machines in CloudContainers on Virtual MachinesServerless as the unit of compute

EVOLUTION

COMPUTE Functions are the unit of deployment and scaling.No machines, VMs, or containers visible in theprogramming 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 runanywhere.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 FaaSis 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

LAMBDANODE

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

AWS EXAMPLE

LAMBDAJAVA

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 EVENTSS3

Cloud Watch

Config

AWS IoT

Cognito

SES

API Gateway

(no complete list)

LAMBDA

DynamoDB

Cloud Formation

Kinesis

Code Commit

SNS

Echo / Alexa

Cron

GATEWAYAPI

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 GATEWAYNETFLIX

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

GATEWAYAUTHENTICATION / AUTHORIZATION

AWS Cognito / STS

Custom Authorizer (Lambda Function, returning IAM policies)

API

API GATEWAY AUTHORIZATION

GATEWAYAPI

DYNAMODB

DYNAMOFully Managed NoSQL Data Store

Schemaless Data Model

Seamless Scalabiltiy, "no limits"

Pay by Read-/Write-Capacity-Units

DB

Example

CASESUSE

SERVERLESS ARCHITECTUREWEB

SERVERLESS ARCHITECTUREWEB

API Gateway with , Push and SNS SQS

SKILLSBOTS (CHAT/VOICE)

ALEXA

TESTING

TESTING

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

UNIT TESTS

TESTING

Environment, Infrastructuremax. 1024 of running processes/threads

max. 100 concurrent Lambdas per Region no remote debugging

INTEGRATION TESTS

COMPETITORS?

GOOGLECLOUD FUNCTIONS

JavaScript

COMPETITOR

MICROSOFTAZURE FUNCTIONS

JavaScript, C#, Python, PHP

COMPETITOR

ON ?PREMISE

COMPETITOR

IBM BLUEMIX

Bluemix Cloud & OnPremiseOpen Source / Apache License v2.0JavaScript (Node.js), Python and... Swi�!Docker SupportFunction-Chaining

OPENWHISK

IBM

LET'S GET STARTEDOPENWHISK

$ 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 ServersFast results, minimal effort, minimal TTM(!)Low costs, minimal financial riskAutomatic Scalabiltiy and Availability "out-of-the-box"

SERVERLESS

THANK !ANY ?

Slides:

Niko Köbler So�ware-Architect, Developer & Trainer

| |

YOUQUESTIONS

http://bit.ly/serverless-slides

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

LINKSAWS Lambda: Amazon API Gateway:

Google Cloud Functions:

Microso� Azure Functions:

IBM OpenWhisk: IBM OpenWhisk SourceCode:

Serverless Framework:

https://aws.amazon.com/lambdahttps://aws.amazon.com/api-

gateway

https://cloud.google.com/functions

https://azure.microso�.com/services/functionshttps://developer.ibm.com/openwhisk

https://github.com/openwhisk/openwhiskhttp://serverless.com