Event-driven serverless applications with Amazon EventBridge - AWS Meetup Stockholm October 16 2019

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Opsio internal workshop 2018-11-23 @gunnargrosch Stockholm AWS Meetup 2019-10-16 Gunnar Grosch @gunnargrosch Event-driven serverless applications with Amazon EventBridge

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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GUNNAR GROSCH • Evangelist and Co-founder at Opsio • Almost 20 years of experience in the industry with a background in development, operations, sales and management • Helping the community as an organizer of AWS User Groups, AWS Community Day Nordics, ServerlessDays Stockholm and Serverless Meetups • Advocate for serverless and chaos engineering @gunnargrosch

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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“Serverless allows you to build and run applications and services without thinking about servers. It eliminates infrastructure management tasks such as server or cluster provisioning, patching, operating system maintenance, and capacity provisioning.” Amazon Web Services @gunnargrosch

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“… without thinking about servers …” @gunnargrosch

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“… servers …” @gunnargrosch

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“… servers …” @gunnargrosch

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@gunnargrosch

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WHAT IS SERVERLESS? • No infrastructure provisioning – no management • Automatic scaling • Pay for value • Highly available and secure @gunnargrosch

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“Serverless technologies have the ability to truly democratize applications. A child in their bedroom can build and operate an application that serves millions of users. Serverless distills applications down to pure business value which unlocks unprecedented potential in application developers.” Richard Boyd @gunnargrosch

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THE AWS SERVERLESS PLATFORM Compute @gunnargrosch AWS Lambda AWS Fargate Amazon Simple Storage Service Amazon Elastic File System Amazon DynamoDB Amazon Aurora Serverless Storage Data stores

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Amazon Simple Notification Service THE AWS SERVERLESS PLATFORM Integration @gunnargrosch API Proxy Analytics Amazon Simple Queue Service AWS AppSync Amazon EventBridge Amazon Kinesis Amazon Athena Orchestration AWS Step Functions Amazon API Gateway

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”Stop calling everything serverless” Jeremy Daly @gunnargrosch

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SIMPLE WEB SERVICE @gunnargrosch AWS Lambda Amazon DynamoDB Amazon API Gateway Client Synchronous

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Amazon Simple Storage Service SIMPLE S3 ”THUMBNAIL” TRIGGER @gunnargrosch AWS Lambda Client Asynchronous

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BUILDING SERVICES @gunnargrosch Function Function Service Service

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BUILDING SERVICES @gunnargrosch UpdateOrder CreateOrder Database Order Service

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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WHAT IS AN EVENT? Event [ih-vent] (dictionary.com) • something that happens or is regarded as happening; an occurrence, especially one of some importance • something that occurs in a certain place during a particular interval of time • the outcome, issue or result of anything @gunnargrosch

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WHAT IS AN EVENT? • Events are facts: The image was uploaded • Events are temporal: The image was uploaded 2019-10-16 18:34:21 • Events are immutable: The image was uploaded 2019-10-16 18:34:21 – no matter what you do afterwards @gunnargrosch

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An event is a signal that a system’s state has changed @gunnargrosch

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COMMANDS VS EVENTS Command • Has an intent • Directed to a target • One-to-one CreateOrder ProcessOrder InvoiceOrder @gunnargrosch Event • Is a fact • For others to observe • One-to-many OrderCreated OrderProcessed OrderInvoiced

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HOW IT USUALLY WORKS Storage Databases Analytics … @gunnargrosch Events Functions Event sources File stored Data changed Detection API call Business logic

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BUILDING SERVICES @gunnargrosch UpdateOrder CreateOrder Database Order Service

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ARCHITECTURE @gunnargrosch Delivery Service Order Service Client

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ARCHITECTURE WITH FAN-OUT @gunnargrosch Delivery Service Order Service Client Billing Service Analytics Service

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ARCHITECTURE WITH EVENT ROUTER @gunnargrosch Delivery Service Order Service Client Invoicing Service Analytics Service Event Router Asynchronous • Decouples downstream processes • Allows multiple subscribers with filters

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ARCHITECTURE WITH EVENT STORE @gunnargrosch Order Service Client Event Router Asynchronous • SNS to SQS is near guaranteed with 100 010 retries Functions Event Store Services Service

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FINAL ARCHITECTURE @gunnargrosch Order Service Client SNS Asynchronous Functions SQS Services Service

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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”The most important announcement since the release of AWS Lambda in 2014” Paul Johnston @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE • Fully managed, pay-as-you-go • Native integration with SaaS providers • Integrated with over 90 event sources and 15 targets • Send events from your own applications • Easily build event-driven application architectures • Now with CloudFormation support! @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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AMAZON EVENTBRIDGE @gunnargrosch

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Amazon EventBridge SAMPLE EVENTBRIDGE SCHEDULER @gunnargrosch AWS Lambda

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Amazon EventBridge Amazon Simple Storage Service SAMPLE S3 WITH EVENTBRIDGE @gunnargrosch AWS Lambda Client AWS Lambda Amazon Simple Queue Service

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AWS Step Functions Amazon EventBridge SAMPLE SAAS WITH EVENTBRIDGE @gunnargrosch AWS Lambda SaaS Provider Amazon Simple Queue Service AWS Lambda Amazon DynamoDB

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Amazon Aurora Serverless Amazon EventBridge SAMPLE CUSTOM EVENTBRIDGE EVENT @gunnargrosch AWS Lambda On-premise Monolith Amazon Simple Queue Service

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Event-driven serverless applications with Amazon EventBridge @gunnargrosch

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SERVERLESSDAYS STOCKHOLM – OCTOBER 24 • A developer-oriented conference about serverless technologies • Several talks with AWS in focus: • What can Clausewitz teach us about serverless? Richard Boyd, AWS • What to do with your data in a serverless world Angela Timofte, Trustpilot • How to build a full-stack serverless airline ticketing web app Heitor Lessa, AWS • CI/CD in the serverless era Efi Merdler-Kravitz, Lumigo • How Amazon EventBridge transforms serverless development James Beswick, AWS • Included in the ticket is a workshop of choice on October 25 • More info and tickets: https://stockholm.serverlessdays.io/ @gunnargrosch Promo code: AWS_UG_STHLM

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52 CUSTOMERS @gunnargrosch

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53 PARTNERS @gunnargrosch

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54 Tynäsgatan 12 652 16 Karlstad +46 10 25 25 500 info@opsio.se www.opsio.se