Jakarta Tech Talk: How to develop your first cloud-native Application with Java
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The document provides guidance on developing cloud-native applications using Java, emphasizing microservices architecture with Kubernetes, Istio, and MicroProfile. It outlines design principles for an example application named 'cloud-native-starter', which utilizes open-source components and highlights continuous delivery, traffic management, and resiliency strategies. The document also covers key practices like distributed logging, monitoring, and authentication mechanisms to address challenges in cloud-native application development.
![“Microservices are a software
development technique [...]
that structures an application
as a collection of loosely
coupled services.”
Wikipedia
#IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff](https://image.slidesharecdn.com/jakartatechtalk-190710072023/85/Jakarta-Tech-Talk-How-to-develop-your-first-cloud-native-Application-with-Java-3-320.jpg)
![“Optimizing Enterprise Java
for a Microservices
Architecture.
[...] by innovating [...] with a
goal of standardization.”
microprofile.io
@nheidloff @Harald_U #IBMDeveloper github.com/ibm/cloud-native-starter](https://image.slidesharecdn.com/jakartatechtalk-190710072023/85/Jakarta-Tech-Talk-How-to-develop-your-first-cloud-native-Application-with-Java-8-320.jpg)
Jakarta Tech Talk: How to develop your first cloud-native Application with Java
- 1. How to develop your first cloud-native Applications with Java— Niklas Heidloff Developer Advocate, IBM @nheidloff
- 2. How to use all Pieces together? Kubernetes Java Enterprise Edition Istio Eclipse MicroProfile #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 3. “Microservices are a software development technique [...] that structures an application as a collection of loosely coupled services.” Wikipedia #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 4. Continuous delivery → DevOps Elasticity → App stays responsive What are cloud-native Applications? #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 5. New Options → New Challenges
- 6. “Kubernetes (K8s) is an open- source system for automating deployment, scaling, and management of containerized applications.” kubernetes.io #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 7. “Istio is an open platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data.” github.com/istio/istio @nheidloff
- 8. “Optimizing Enterprise Java for a Microservices Architecture. [...] by innovating [...] with a goal of standardization.” microprofile.io @nheidloff @Harald_U #IBMDeveloper github.com/ibm/cloud-native-starter
- 9. How to use all Pieces together? Kubernetes Java Enterprise Edition Istio Eclipse MicroProfile #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 10. Leverage platforms as much as possible. Use frameworks for app specific logic. #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 11. Design principles for the end-to- end example ‘cloud-native- starter’ Use only open- source components for the core services of the application Make the first time experience as simple as possible Be able to run the application in different environments #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 12. Architecture: End-to-End Example ‘cloud-native-starter’ Web-App NoSQL / Cloudant Web-API v1 Articles Web-API v2 Authors Web-App SQL / Db2 OpenID / App ID LogDNASysdig Authentication Browser Kubernetes with Istio Optional Cloud Services Ingress @nheidloff
- 13. “A container image is a lightweight, standalone, executable package of software that includes everything needed to run an application.” docker.com #IBMDeveloper github.com/ibm/cloud-native-starter Infrastructure Host Operating System Container Runtime AppA AppB AppC AppD AppE @nheidloff
- 15. Java Image Open source stack OpenJ9 0.14.0 OpenJDK 11.0.3+7 from AdoptOpenJDK Open Liberty 19.0.0.5 MicroProfile 2.2 Dockerfile #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 17. Example Application – REST APIs Web-App Web-API Articles Authors Browser Kubernetes with Istio @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 18. Exposing REST APIs JAX-RS Java API for RESTful Web Services GetArticles.java @nheidloff
- 19. Exposing REST APIs Open API (formerly Swagger) API description format for REST APIs GetArticles.java @nheidloff
- 20. Exposing REST APIs Open API (formerly Swagger) API description format for REST APIs @nheidloff
- 21. Consuming REST APIs MicroProfile Rest Client Type-safe approach to invoke RESTful services AuthorsService.java AuthorsServiceDataAccess.java @nheidloff
- 22. Consuming REST APIs MicroProfile Rest Client Type-safe approach to invoke RESTful services AuthorsService.java AuthorsServiceDataAccess.java @nheidloff
- 23. Example Application – Traffic Management Web-App Web-API v1 Articles Web-API v2 Authors Browser Kubernetes with Istio @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 24. Traffic Management – Web API Version 1
- 25. Traffic Management – Web API Version 2
- 26. Traffic Management Example: 80% / 20% splitting ingress.yaml @nheidloff
- 28. Example Application – Resiliency Web-App Web-API Articles Authors Browser Kubernetes with Istio @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 29. Resiliency Authors service not available Usage of default values Service.java @nheidloff
- 30. Resiliency Articles service not available MicroProfile fallback annotation Service.java @nheidloff
- 31. Resiliency Demo
- 32. Resiliency Demo
- 33. Authentication and Authorization OpenID Connect Identity layer on top of the OAuth 2.0 protocol IBM App ID IBM service to authenticate users and protect APIs policy.yaml @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 34. Example Application – Authentication and Authorization Web-App Web-API Articles Authors OpenID Connect / IBM App ID Authentication Browser Kubernetes with Istio Optional Cloud Services Ingress @nheidloff
- 35. Authentication
- 36. Authorization
- 37. Authorization
- 39. Authorization Via MicroProfile Manage.java @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 40. Chained invocations Kubernetes → 1 service = N pods Microservices vs monolith → Higher complexity → Ephemeral Tracing Logging Monitoring Metrics Healthchecks Observability @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 41. Example Application – Distributed Logging Web-App Web-API Articles Authors Browser Kubernetes with Istio @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 43. Example Application – Distributed Logging Web-App Web-API Articles Authors Browser Kubernetes with Istio @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter
- 45. Tracing OpenTracing Vendor-neutral APIs and instrumentation for distributed tracing Jaeger and Zipkin Open source distributed tracing systems server.xml #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 47. Metrics Prometheus Monitoring system and time series database GetArticles.java #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 48. Metrics
- 49. Healthchecks MicroProfile Health Liveness probes and readiness probes HealthEndpoint.java Service.yaml @nheidloff
- 50. Persistence via JPA Web-App Web-API Articles Web-App SQL / Db2 Browser Kubernetes with Istio Optional Cloud Services Ingress @nheidloff
- 52. Persistence Via JPA ArticleEntity.java #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 55. Try out the end-to-end microservices example cloud-native-starter! #IBMDeveloper github.com/ibm/cloud-native-starter@nheidloff
- 56. Documentation
- 57. IBM Cloud Kubernetes Service including Istio and Knative
- 58. IBM Developer developer.ibm.com IBM Cloud Lite account ibm.biz/nheidloff IBM loves open source Kubernetes and Istio OpenJ9 & AdoptOpenJDK MicroProfile Open Liberty Leverage platforms as much as possible Use frameworks for app specific logic Summary Get the code à @nheidloff #IBMDeveloper github.com/ibm/cloud-native-starter