Serverless Spring

Role of Spring in the Serverless Landscape
Spring and Serverless Platform
Knative + riff Value Proposition
Live coding / Demos!

Transcript

1. Serverless Spring Sabby Anandan [@sabbyanandan]
2. Plot Woah, Serverless! Role of Spring in the Serverless Landscape Spring and Serverless Platforms Putting it all together 2
3. Compute 3
4. Containers Virtual Machines Compute 4
5. Containers Virtual Machines Compute Serverless 5
6. Should Developers Care? Containers Virtual Machines Compute Serverless 6
7. Developer Focus Ideation Implementation Production 7
8. Production Focus Happy Customers Containers Virtual Machines Compute Serverless Ideation Implementation Production 8
9. Serverless: The Promise 0 X Scale to Zero $ Billed by Use Ideation Implementation Production Focus on Business Logic Event Driven 9
10. Functions in Spring
11. Package: java.util.function public interface Supplier<T> { T get(); } public interface Function<T, R> { R apply(T t); } public interface Consumer<T> { void accept(T t); } // source // processor // sink 11
12. Spring Cloud Function @SpringBootApplication public class Application { @Bean public Function<String, String> upper() { return value -> value.toUpperCase(); } public static void main(String[] args) { SpringApplication.run(Application, args); } } 12
13. Plain Old Functions (Imperative Style) package functions; public class Upper implements Function<String, String> { String apply(String name) { return name.toUpperCase(); } } 13
14. Functional Style @SpringBootApplication public class Application { @Bean public Function<Flux<String>, Flux<String>> toUpper() { return flux -> flux .filter(this::isValid) .map(String::toUpperCase); } boolean isValid(String input) { ... } public static void main(String[] args) { SpringApplication.run(Application.class, args); } } 14
15. Serverless -or- Function as a Service
16. FaaS Providers Amazon Lambda [native-Java] Microsoft Azure Functions [native-Java] Google Cloud Functions riff [native-Java] IBM OpenWhisk [native-Java] OpenFaaS Fission Kubeless Oracle Fn [native-Java] … Spring Boot FaaS Provider Adapters Function Microsoft Azure Spring MVC Spring Cloud Stream AWS Lambda IBM OpenWhisk Spring Cloud Task Spring Cloud Function - Pluggable Adapters 16
17. riff is for functions
18. riff is for functions Developers can execute functions in response to events. - Event-streaming as first-class design principle - Polyglot - Kubernetes native 18
19. Knative Developers can use familiar idioms, languages, and frameworks to deploy any workload: functions, applications, or containers. 19
20. A Simple Java Function e38dblsskjlk88o de322sss0909k Function Function Invoker Base Image Layers Upper $ riff function create java upper Function Layer package functions; public class Upper implements Function<String, String> { String apply(String name) { return name.toUpperCase(); } } 20
21. Loosely Coupled Functions Upper Logger 21
22. Loosely Coupled Functions Upper Logger bigtext T R I G G E R S U B S C R I B E R E P L Y T O S U B S C R I B E text 22 channel channel
23. Look Familiar? 23
24. • Spring Developers: a smaller, more familiar step with access to Spring (dependency injection, integrations, and autoconfiguration) and build tools (testing, continuous delivery, and run locally) • Functionistas: no need to know anything about Spring SCFn Narrative Mark Fisher Dave Syer
25. Q+A