serverless application - who the heck needs a server?

Serverless ApplicationsLars Röwekamp | CIO New Technologies | @mobileLarson

open knowledge | #WISSENTEILEN

ÜBER OPEN KNOWLEDGEBranchenneutrale Softwareentwicklung und IT-Beratung

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ÜBER MICH

Wer bin ich - und wen ja, wie viele?

• CIO New Technologies • Enterprise & Mobile • Autor, Speaker, Coach & Mentor

• Snowboard & MTB Enthusiast• Mehrfacher Vater, einfacher Ehemann

Lars Röwekamp (a.k.a. @mobileLarson)

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LR

An Era of „Mindshift“

1 Mio € App(lication)

Time is Money

An Era of „Mindshift“

App BusinessPlan ...

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#Servers?(OS? Files & Storage? CPU? Memory?)

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#Customers?(Start small! Grow fast! Die faster?)

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#Traffic?(Moderate but peeks!)

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#Security?(OS? Patches? Access Control?)

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Depends ...!(Go for max? Way to expensive!)

I had a dream ...

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Serverless

„Kein Server ist einfacher zu

verwalten, als kein Server.“

(Werner Vogels, CTO Amazon)

Out-of-the-Box self-scalingBackend

> IaaS> PaaS> BaaS

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Road to less Server

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IaaS

Road to less Server

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IaaSPaaS

Road to less Server

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Road to less Server

IaaSPaaS?

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Road to less Server

IaaSPaaSBaaS

Ain‘t gonna work!

Ain‘t gonna work!

My Business LogicMy Integration Logic

My Event-based Logic

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Road to less Server

IaaSPaaSBaaS

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Road to less Server

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Fa#!? WTH?(a.k.a. Serverless)

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Run Code, not Server!

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“Run your code highly-available in the cloud in response to events and scale without any servers to manage.“

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Road to less Server

• High Availability• Zero Administration• Auto-Scaling• Your Code

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Road to less Server

• High Availability• Zero Administration• Auto-Scaling

•Your Code

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Road to less Server

• High Availability• Zero Administration• Auto-Scaling

•Your Code• Sharing Resources• Security related Issues• Access to other Resources

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Serverless

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Main Player

AWS Lamdba

Google Cloud Functions *)

MicrosoftAzure Functions

IBM OpenWhisk**)

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The Main Player

AWS Lamdba(serverless, event-driven compute service)

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How does it work?

S3 Bucket

DynamoDB

Kinesis

EVENT

EVENT

INVOKE

Stateless Code(a.k.a. AWS Lambda)

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How does it work?

S3 Bucket

DynamoDB

Kinesis

INVOKE

INVOKE

RETURN

Stateless Code(Node, Python, Java, C#)

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Subscribe to ...

Amazon S3

Amazon DynamoDB

Amazon Kinesis

AWS CloudFormation

AWS CloudTrail

Amazon CloudWatch

Amazon SNS

AmazonSES

AmazonAPI GatewayAmazon

Cognito

AWSIoT

AmazonAlexa

CronEvents

DATA STORES ENDPOINTS

REPOSITORIES EVENT/MESSAGE SERVICES

Amazon Config

Anatomy ofa Lambda

Function

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Anatomy

Lambda Function

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Anatomy

Handler Function

Lambda Function

</>

„...“

Event Object

Context Object

...{

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Anatomy

Handler Function

Lambda Function

</>

„...“

Event Object

Context Object

...{IAM Role

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Anatomy

Handler Function

Lambda Function

</>

„...“

Event Object

Context Object

...{IAM Role

Return Object*

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Anatomy

Lambda Function

1. Number of Calls*2. Memory Usage**{IAM Role

Return Object*(*first 1 million for free, **first 400.000 sec free for 1 GB memory)

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Scenarios(gimme some “Demos“)

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FaaS Scenarios

• Data & File Processing• Data and Analytics • Websites• Mobile Applications

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„Hello World“

Thumbnail Creation(Data & File Processing)

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„Hello World“

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„Hello World“ V2.0

Trend & Fault Detection(Event Streaming)

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Web Application(Custom Events)

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Resource Optimization(ELSE-Branch)

if (normalCase) {runOnMyServer();

} else { runLambdaInTheCloud();

}

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Doing it the right Way

AWS Lamdba SDK Amazon API Gateway

vs.

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Doing it the right Way

• RESTful API Gateway• Caching via CDN• DDoS Protection• Throttling Capabilities• API Stages• Decoupling of C/S Amazon API Gateway

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Serverless App Architecture

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Demo(damn, gimme some REAL Demo!)

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„Hello REAL World“

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AWSOME!(But what‘s about ...?)

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#Versioning(Version vs. Alias)

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#Security(Push vs. Pull Policy)

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#Concurrency(max 200 at once, max 300 sec)

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#ErrorHandling(What‘s the Retry Policy?)

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#Tracing(Who? When? Where? What?)

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#Monitoring(Logs & Metrics)

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#Testing(„If i test, i do it in Production!“)

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#Deployment(DIY vs. Tooling)

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#NoOps(Ok, let‘s call it „LessOps“)

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#VendorLock(Adrian said: „2*Vendor << DIY“)

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#Pricing(Never pay for idle!)

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#BestPractices(Keep calm and ...)

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#Pitfalls(cold, warm, hot)

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Fazit

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Run Code, not Server!

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Don‘tpay Idle!

1 Mio € App

Yeah, all Work done!

? ? ?FRAGEN

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Kontakt

LARS RÖWEKAMPCIO NEW TECHNOLOGIES

[email protected]+49 (0)441 4082 – 101

@mobileLarson@_openknowledge

OFFENKUNDIGGUT

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Bildnachweise

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All other pictures inside this presentation orginate frompixabay.com.

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