serverless architectures

Serverless Architectures

RANGAN ATHAN BAL ASHANMUGAM

@r an_than

“What Is The Output Of Software?”

What Is Software Design?

SRC : HTTP ://WWW.DEVELOPERDO T S TAR .COM/MAG/AR T ICLES/REEVES_DES IGN .HTML

J ACK W. REEVES - 1992

— - IN 3 S L IDES — -

THE F IN AL GOAL OF ANY ENG INEER ING ACT I V I T Y I S SOME T YPE OF

DOCUMENTATION

WHEN THE DES IGN EFFOR T I S COMPLETE ,

THE DES IGN DOCUMENTAT ION I S TURNED OVER T O THE

MANUFACTUR ING TEAM.


“G IVEN THAT SOFT WARE DES IGNS ARE REL AT I VELY EAS Y T O TURN OUT

AND

ESSENT IALLY FREE T O BU I LD , AN UNSURPR IS ING REVEL AT ION I S THAT

SOFT WARE DES IGNS TEND T O BE INCRED IBLY L ARGE AND COMPLEX .”


“SOFT WARE MAY BE CHEAP T O BU I LD ,

BUT I T I S INCRED IBLY EXPENS IVE T O DES IGN .”

SRC: HTTP ://WWW.DEVELOPERDO T S TAR .COM/MAG/AR T ICLES/REEVES_DES IGN .HTML

“S IMPL I F I C AT ION I S THE TECHNOLOGY TREND FOR 2016 .”

- WERNER VOGEL , C T O @ AMAZON

“ THE B IR TH OF ANY BREAK THROUGH TECHNOLOGY HAS A TENDENCY T O SPARK F I ERCE D ISCOURSE .”

@au th0

Evolution Of Architectures

Monolith

SRC : AW S

3-tier

PRESENTAT ION LOG IC DB

IMAGE SRC : AW S

3-tier - Evolved

SRC : HTTPS ://READ .ACLOUD .GURU/SERVERLESS - THE - FUTURE -OF - SOFT WARE - ARCH I TECTURE -D4473FFED864# .KOX11S8OH

Service Oriented Architecture

SRC : AW S

Presentation Tier Logic Tier

Data Tier

Microservices Architecture

SRC : AW S

DATA CENTER PAASIAAS SERVERLESS!

ABS TRACT S :

HOS T ING

ENV IRONMENT

ABS TRACT S :

PHY S IC AL HARDWARE

ABS TRACT S :

OS

ABS TRACT S :

L ANGUAGE

RUNT IME

BARE METAL CONTAINERSVIRTUALIZATION SERVERLESS!

HIGH

LOW

• Operational costs

• Time to deploy

• Maintenance

Serverless?

“UPLOAD YOUR CODE AND RUN YOUR FUNCT IONS .”

What Is Serverless? - Simpler• Functions

• Functions => Runtimes

• Events trigger functions

• Functions execute on demand

• Infra costs are only by execution

• Continous scaling

• Servers are not developers responsibility

“ THE ESSENCE OF THE SERVERLESS TREND I S THE ABSENCE OF

THE SERVER CONCEPT DUR ING SOFT WARE DEVELOPMENT.”

@au th0

“MY S T ORY - F I X ING THE FRAMEWORK”

Serverless On Aws• API gateway.

• Lambda.

• S3 - static content.

• Dynamo DB to persist data.

• Other resources.

MICROSERV ICES

MONOL I TH

What About Microservices?

MICROSERV ICES

MICROSERV ICES

MICROSERV ICES

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

What About Microservices?FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

MICROSERV ICE

What About Microservices?

FUNCT ION

FUNCT ION

FUNCT ION

FUNCT ION

AP I GATEWAY

“Focus On Functions”

Function - Expectations• Do one thing

• Idempotent

• Finish fast

GOOGLE CLOUD FUNCT IONSAW S L AMBDA MICROSOFT AZURE

CLOUD FUNCT IONS

Platforms

I RON . IOIBM OPENWHISK

Frameworks

KAPPA

Google Cloud Functions• https://cloud.google.com/functions/

docs/tutorials/

Microsoft Azure Cloud Functions• https://azure.microsoft.com/en-us/

services/functions/

• Demo

IBM OpenWhisk

Iron.IO

SRC : I RON . IO

Amazon AWS Lambda

Amazon S3

DYN AMICS TAT IC

Why Serverless?• As developer, you may just need to

respond to events with some functions.

• From 24/7 running servers to pay per function execution.

• Easy configuration and deployment.

Why NOT Serverless?• As Microservices, if the system grows,

complexity grows. Managing 1 server is better than, managing 500 functions.

• Early stage, limited tools and monitoring.

• As of now, only fewer languages/runtimes are supported.

• Local/Offline testing

• Vendor lock???

• Stateless servers

USE C ASES

A Cloud Guru social learning

SRC : HTTPS ://READ .ACLOUD .GURU/SERVERLESS - THE - FUTURE -OF - SOFT WARE - ARCH I TECTURE -D4473FFED864# .KOX11S8OH

Instant - The serverless startup

SRC : HTTPS ://BLOG . INS TANT.CM/A -C ASE - S TUDY -OF - TE LETEXT - IO - THE - SERVERLESS - S TAR TUP -C1E08022BDC2# .H6QH2EA2C

Instant - Architecture

SRC : HTTPS ://BLOG . INS TANT.CM/A -C ASE - S TUDY -OF - TE LETEXT - IO - THE - SERVERLESS - S TAR TUP -C1E08022BDC2# .H6QH2EA2C

• Authentication: Google JS, AWS Cognito

• Editing text: API Gateway

• Handling the drafts: Lambda

• Storing drafts: DynamoDB

• Serving live content: S3 and CloudFront

• No Devops

• No scaling issues

• Pay for usage, not uptime

Url Shortner

What Is Serverless? - In A Slide• Functions

• Functions => Runtimes

• Events trigger functions

• Functions execute on demand

• Infra costs are only by execution

• Continous scaling

• Servers are not developers responsibility

• Platforms: AWS Lambda, Google cloud functions, Azure functions, IBM Openwhisk, iron.io

• Frameworks: serverless.com, apex, webtask, sparta, kappa, deployd, iopipe

“ THE B IR TH OF ANY BREAK THROUGH TECHNOLOGY HAS A TENDENCY T O SPARK F I ERCE D ISCOURSE .”

@au th0

THANK YOU

https://twitter.com/ran_than

serverless architectures

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