Serverless Computing @ Javaland 2017

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COMPUTING (WITH INFRASTRUCTURE) Niko Köbler So ware-Architect, Developer & Trainer | | SERVERLESS AWS niko@n-k.de www.n-k.de @dasniko

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@dasniko

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http://www.jug-da.de @JUG_DA

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

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This is what actually means... serverless

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Serverless is about the of servers. Build and run applications servers. management without thinking about

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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

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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

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? Unit of deployment and scale! PaaS FaaS is as DevOps NoOps PAAS vs. vs.

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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

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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

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

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DYNAMO Fully Managed NoSQL Data Store Schemaless Data Model DynamoDB Streams Record TTL Seamless Scalabiltiy, "no limits" Pay by Read-/Write-Capacity-Units and used storage, not by time DB

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Example CASES USE

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SERVERLESS ARCHITECTURE WEB

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API Gateway with , Push and SNS SQS

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SKILLS BOTS (CHAT/VOICE) ALEXA

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COMPETITORS?

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Provider since Environment AWS Lambda 2014 JavaScript, Python, Java, C# Microso AzureFunctions 2016 JavaScript, Python, Java, C#, PHP Google CloudFunctions 2016 JavaScript IBM Bluemix w/ OpenWhisk* 2014 JavaScript, Python, Swi * Apache OpenWhisk is also available for on-premise usage as OSS under ASL2 COMPETITORS

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THE FRAMEWORK Manages all the Cloud-Resources and Deployment. SERVERLESS serverless.com

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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

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# BUCH / entwickler. / ~ summer 2017 SERVERLESS serverlessbuch.de @serverlessbuch press

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THANK ! ANY ? Slides: Niko Köbler So ware-Architect, Developer & Trainer | | YOU QUESTIONS http://bit.ly/serverless-javaland niko@n-k.de www.n-k.de @dasniko

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