Serverless Microservices

Transcript

1. HOW SMALL CAN YOU GO? MICROSERVICES SERVERLESS (WITH AWS ) LAMBDA Niko Köbler So ware-Architect, Developer & Trainer | | niko@n-k.de www.n-k.de @dasniko
2. @dasniko
3. DISCLAIMER This is silver bullet, NO no standard, but opinionated!
4. SERVERLESS
6. This is what actually mean... serverless
7. It's all about the of servers! management
8. HOW COULD THIS HAPPEN? We had... Monoliths Distributed Monoliths Self-contained Systems Microservices Bounded Contexts PaaS BaaS
9. ...and now, finally, we have... F S AA Function as a Service
10. FUNCTIONS Running own code (function) in an external, sandboxed, stateless (and transient) compute container. No application server, no embedded server no Docker ;-)
11. ? PAAS
12. PaaS FaaS vs. is as DevOps NoOps vs.
13. AWS LAMBDA
14. AWS LAMBDA Event Driven JVM-based languages (Java 8), JavaScript (Node.js), Python, (more to come) AWS Libraries are available at runtime Versions, Aliases via ARNs calculating time based costs, 100ms blocks (e.g. 100ms w/ 128MB memory = USD 0.000000208)
15. AWS LAMBDA EXAMPLE NODE exports.handler = (event, context) => { console.log('Received event:', JSON.stringify(event)); }
16. AWS LAMBDA EXAMPLE JAVA public class ImageProcessor implements RequestHandler<S3Event, Void> { @Override public Void handleRequest(S3Event s3Event, Context context) { // get the S3 event data from the event request S3EventNotification.S3EventNotificationRecord record = s3Event.getRecords().get(0); // your code goes here... // return an object with specified type (see class generics) return null; } }
17. AWS EVENTS LAMBDA S3 Cloud Watch Config DynamoDB Cloud Formation Kinesis Cognito SES Cron AWS IoT SNS API Gateway (no complete list)
18. GATEWAY API
19. GATEWAY API "Reverse Proxy" hides possible multiple service calls (aka "service composition", ESB?) distributes requests to proper service instances "Mock" services
20. API GATEWAY NETFLIX
21. GATEWAY API "Reverse Proxy" hides possible multiple service calls (aka "service composition", ESB?) distributes requests to proper service instances "Mock" services
22. GATEWAY API AUTHENTICATION / AUTHORIZATION AWS Cognito / STS Custom Authorizer (Lambda Function, returning IAM policies)
23. API GATEWAY AUTHORIZATION
24. GATEWAY API
25. CASES USE
26. SERVERLESS ARCHITECTURE WEB
29. API Gateway with , Push and SNS SQS
30. TESTING
31. TESTING UNIT TESTS Functions are easy to test, stateless and little to no dependencies
32. TESTING INTEGRATION TESTS Environment, Infrastructure max. 1000 parallel running Lambdas
33. COMPETITORS?
34. COMPETITOR GOOGLE CLOUD FUNCTIONS JavaScript
35. COMPETITOR MICROSOFT AZURE FUNCTIONS JavaScript, C#, Python, PHP
36. ON ? PREMISE
37. COMPETITOR IBM BLUEMIX OPENWHISK Bluemix Cloud & OnPremise Open Source / Apache License v2.0 JavaScript (Node.js), Java (?) Python and... Swi ! Docker Support Function-Chaining
38. IBM OPENWHISK LET'S GET STARTED $ git clone https://github.com/openwhisk/openwhisk.git $ cd openwhisk/tools/vagrant $ vagrant up
39. IBM OPENWHISK JAVASCRIPT EXAMPLE function main(params) { return {payload: 'Hello, ' + params.name}; } Create the action in OpenWhisk $ wsk action create hello hello.js Run the action $ wsk action invoke hello --blocking --result --param name Niko Result { "payload": "Hello, Niko" }
40. DRAWBACKS Overview: Documentation, Logging & Monitoring, Metrics ! (typical things for distributed environments) Cloud Provider Binding / Dependency: APIs, Portability, Costs, SLAs
41. DRAWBACK LATENCY https://twitter.com/patrickdebois/status/795355324987375616
42. DRAWBACK LATENCY https://www.prerender.cloud/lambda-latency
43. ? CURIOUS WANT TO START? Give a try! serverless.com
44. SERVERLESS.COM # Install serverless globally $ npm install serverless -g # Create an AWS Lamdba function in Node.js $ serverless create --template aws-nodejs # Deploy to live AWS account $ serverless deploy # Function deployed! $ http://api.amazon.com/users/update "Powered by AWS Lambda"
45. BUT POWERFUL SERVERLESS 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"
46. THANK ! YOU ANY ? QUESTIONS Niko Köbler So ware-Architect, Developer & Trainer | | niko@n-k.de www.n-k.de @dasniko
47. LINKS AWS Lambda: Amazon API Gateway: Google Cloud Functions: Microso Azure Functions: IBM OpenWhisk: IBM OpenWhisk SourceCode: Serverless Framework: https://aws.amazon.com/lambda https://aws.amazon.com/api- gateway https://cloud.google.com/functions https://azure.microso .com/services/functions https://developer.ibm.com/openwhisk https://github.com/openwhisk/openwhisk http://serverless.com