The emperor's new clothes - A Tale from Cloud and Legacy

Transcript

1. The emperor’s new clothes - A tale from Cloud and Legacy Daniel Kocot, Senior Solutions Architect 1
2. Name Daniel Kocot Role Senior Solutions Architect / API Expert @codecentric Email Twitter dk_1977 LinkedIn daniel.kocot@codecentric.de https://www.linkedin.com/in/danielkocot/ 2
3. Initial situation Modernize IT 3
4. Cloud Native CNCF Definition, https://github.com/cncf/toc/blob/main/DEFINITION.md "Cloud native technologies empower organizations to build and run scalable applications in modern, dynamic environments such as public, private, and hybrid clouds. Containers, service meshes, microservices, immutable infrastructure, and declarative APIs exemplify this approach. These techniques enable loosely coupled systems that are resilient, manageable, and observable. Combined with robust automation, they allow engineers to make high-impact changes frequently and predictably with minimal toil." 4
5. Integration Patterns 6
6. File Transfer 7
7. Messaging 8
8. APIs 9
9. "Business logic shouldn’t be implemented within the integration technology layer" 10
10. API first 12
11. API first An API is the first (and often only) interface to users of an application 12
12. API first An API is the first (and often only) interface to users of an application An API comes first — before the implementation 12
13. API first An API is the first (and often only) interface to users of an application An API comes first — before the implementation An API is described (documented) or self-descriptive 12
14. OpenAPI Specification 13
15. API Mediation 14
16. API Mediation Architectural layer to manage, protect and enrich an API 14
17. API Mediation Architectural layer to manage, protect and enrich an API Intercepting API traffic 14
18. API Mediation Architectural layer to manage, protect and enrich an API Intercepting API traffic Concept of "outer" APIs 14
19. API Mediation Architectural layer to manage, protect and enrich an API Intercepting API traffic Concept of "outer" APIs No business logic should be handled within this layers 14
20. Solutions Architecture Pattern 16
21. Using patterns which are well established in the industry…​ 17
22. …​ but also still evolving 18
23. Hybrid integration 19
24. GraphQL integration 1/2 20
25. GraphQL integration 2/2 21
26. Event-Driven architecture 22
27. Anti-Corruption Layer 23
28. Strangler Pattern 24
29. In Practice 26
30. Outline the challenge Modernize our old self-developed ERP! 27
31. Bring in the patterns! Messaging APIs Hybrid integration GraphQL integration Event-Driven architecture Anti-Corruption Layer Strangler Pattern 28
32. Example architecture first iteration 29
33. Example architecture second iteration 30
34. Example architecture third iteration 31
35. Example architecture fourth iteration 32
36. Example architecture fifth iteration 33
37. Example architecture sixth iteration 34
38. References Photo on title slide by on Ian Parker Unsplash 35