Functions: Implement Once, Execute Anywhere!
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Spring Cloud Functions allows writing functions using Java's functional interfaces that can then run on any serverless platform. It provides a unified programming model for function composition, type conversion, and reactive support. Functions can be deployed to serverless platforms like AWS, Google Cloud Functions, and Microsoft Azure. The presentation includes a demo of Spring Cloud Functions and discusses why the functions paradigm is useful for building simple, portable, and testable applications.
Functions: Implement Once, Execute Anywhere!
- 1. Confidential │ ©2019 VMware, Inc. Spring Cloud Functions write once run anywhere! SpringOne 2020 Oleg Zhurakousky Spring Engineering
- 2. Confidential │ ©2019 VMware, Inc. 2 ● Scope ● Deep(ish) dive into Spring Cloud Function ● Run anywhere part Spring Cloud Function - agenda
- 3. Confidential │ ©2019 VMware, Inc. 3 java.util.function.Supplier<?> java.util.function.Function<?,?> java.util.function.Consumer<?> POJO function Spring Cloud Function - scope
- 4. Confidential │ ©2019 VMware, Inc. 4 ● Promote implementation of business logic via java Functions ● Uniformed and portable programming model ○ Transparent Type Conversion ○ Function Composition ○ POJO functions (if it looks/smells like a function it must be a function) ○ Reactive support ○ Deployment of packaged functions ○ Arity - functions with multiple inputs/outputs ● Integration with serverless platforms ○ Amazon AWS ○ Google Cloud Functions ○ Microsoft Azure Spring Cloud Function
- 5. Confidential │ ©2019 VMware, Inc. 5 <Demo>
- 6. Confidential │ ©2019 VMware, Inc. 6 Why Spring Cloud Function
- 7. Confidential │ ©2019 VMware, Inc. 7
- 8. Confidential │ ©2019 VMware, Inc. 8 FUNCTION Why Functions? uppercase
- 9. Confidential │ ©2019 VMware, Inc. 9 FUNCTION Why Functions? uppercase
- 10. Confidential │ ©2019 VMware, Inc. 10 HTTP Why Functions? post/get/... uppercase
- 11. Confidential │ ©2019 VMware, Inc. 11 RSocket Why Functions? requestResponse() uppercase
- 12. Confidential │ ©2019 VMware, Inc. 12 RSocket Why Functions? requestResponse() fireAndForget() requestStream() uppercase
- 13. Confidential │ ©2019 VMware, Inc. 13 Serverless platforms Why Functions? AWS/Azure/Google uppercase
- 14. Confidential │ ©2019 VMware, Inc. 14 RabbitMQKafka Messaging Why Functions? uppercase
- 15. Confidential │ ©2019 VMware, Inc. 15 Why Functions? uppercase
- 16. Confidential │ ©2019 VMware, Inc. 16 <Demo>
- 17. Confidential │ ©2019 VMware, Inc. 17 ● Functions are simple, expressive, extensible and portable ● Most if not all requirements could be expressed with functions. ● Testing your functional application becomes very simple - you only need to test the function itself ● And list of benefits goes on. . . Summary!
- 18. Confidential │ ©2019 VMware, Inc. 18