Serverless ArchitectureLadislav Prskavec

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Serverless is a hot topic in the software architecture

world.1

Mike Roberts

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What is Serverless?

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Backend as a Service

and

Function as a ServicePragueJS, 30.6.2016 4

Backend as a Service (BaaS)4 Firebase - DB + Auth

4 Hoodie - Offline first, PouchDB

4 Algolia - Search

4 Auth0 - SSO, Token Based Auth

4 Kinvey - Mobile Backend as Service

4 Syncano - Assemble your backendPragueJS, 30.6.2016 5

Function as a Service (FaaS)4 Amazon Lambda & API Gateway (Nov'14)

4 IBM Bluemix Openwhisk (Feb'16)

4 Google Cloud Functions (Feb'16)

4 Azure Functions (Mar'16)

4 Webtask.io (Mar'15)

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Amazon Lambda

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Amazon Lambda - Inputs4 Event Source

4 API Gateway

4 S3

4 Kinesis

4 DynamoDB

4 AWS Config

4 Amazon Cognito

4 AWS CloudFormation

4 ...

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Amazon Lambda - Processing4 Compute Service

4 Languages (NodeJS 0.10 and 4.3, Java, Python)

4 Security Model (IAM, VPC)

4 Cascading

4 Run code at any scale

4 Charged on execution scalePragueJS, 30.6.2016 9

Amazon Lambda - Outputs4 Event

4 Storage

4 Messaging

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Cost effectiveScenario - 16k req/day @ 200ms avg = 3200 s/day

$2.97/day - 2 EC2 instances (upfront)$0.05/day - Lambda (1GB)

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Frameworks4 Apex

4 Serverless

4 Zappa

4 Sparta

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Apex - http://apex.run4 in golang support nodejs, golang, python, java

4 optional terraform support

4 multiple deployment targets for different environments

4 idempotent deployments

4 author @tjholowaychuk

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Serverless - http://www.serverless.com

4 in NodeJS support Javascript only

4 Beta, still many changes, roadmap to 1.0

4 CloudFormation

4 Many Plugins

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Zappa - https://zappa.gun.io4 in Python support Python

4 https://github.com/Miserlou/lambda-packages

4 https://github.com/Miserlou/django-zappa

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Sparta - http://gosparta.io4 in Golang support Golang

4 CloudFormation

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Security

4 https://github.com/vandium-io/vandium-node

4 Powerful input validation, Forces values into correct types

4 JSON Web Token (JWT) verification and validation

4 Cross Site Request Forgery (XSRF) detection when using JWT

4 SQL Injection (SQLi) detection and protection

4 Environment variable mapping,

4 Free resources post handler execution

4 Handles uncaught exceptions

4 Promise support

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Testing4 https://github.com/lambci/docker-lambda/

4 Docker images and test runners that replicate the live AWS Lambda environment

4 NodeJS 0.10/4.3

4 Python

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Architectures examples

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Q & A

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Resources4 https://aws.amazon.com/lambda/

4 https://github.com/anaibol/awesome-serverless

4 https://cloudcraft.co

4 https://github.com/lambci/docker-lambda/

4 http://www.allthingsdistributed.com/2016/05/aws-lambda-serverless-reference-architectures.html

4 https://www.thoughtworks.com/radar/techniques/serverless-architecture

4 https://serifandsemaphore.io/azure-cloud-functions-vs-aws-lambda-caf8a90605dd#.dbk2yntw1

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