ISA Principles

ISA (Independent Systems Architecture) is a collection of best practices based on experience in particular with microservices and Self-contained Systems and the challenges faced in those projects.

Transcript

1. Independent
   Systems
   Architecture:
   ISA
   Creator: INNOQ | http://isa-principles.org
   

   View Slide

2. Creator: INNOQ | http://isa-principles.org
   Principles of Microservices
   

   View Slide

3. Creator: INNOQ | http://isa-principles.org
   1 | Modules
   2 | Macro / Micro Architecture
   3 | Container
   4 | Integration & Communication
   5 |Authentication & Metadata
   6 | Independent Continuous Delivery Pipeline
   7 | Standardized Operations
   8 | Standards: Interface only
   9 | Resilience
   

   View Slide

4. Creator: INNOQ | http://isa-principles.org
   Best practices
   > for microservices
   > for Self-contained Systems (SCS)
   http://scs-architecture.org
   Introduction
   Why ISA?
   !
   ! !
   

   View Slide

5. 1 | Modules
   Creator: INNOQ | http://isa-principles.org
   

   View Slide

6. Creator: INNOQ | http://isa-principles.org
   > Modules: Old idea
   > Modularization for a system
   1 | Modules
   

   View Slide

7. Creator: INNOQ | http://isa-principles.org
   Reuse “Module” ideas:
   > High cohesion, low coupling,
   > Separation of concerns,
   > Single Responsibility …
   1 | Modules
   

   View Slide

8. Creator: INNOQ | http://isa-principles.org
   > Modules provide interfaces
   > Access only through interface
   1 | Modules
   

   View Slide

9. Creator: INNOQ | http://isa-principles.org
   > Information hiding
   > Microservice must not use other microservices’
   internals (e.g. database schemas).
   1 | Modules
   

   View Slide

10. 2 | Macro / Micro Architecture
    Creator: INNOQ / http://isa-principles.org
    

    View Slide

11. Creator: INNOQ | http://isa-principles.org
    > Decisions for all modules
    2 | Macro / Micro Architecture
    Macro
    Architecture
    

    View Slide

12. Creator: INNOQ | http://isa-principles.org
    > Decisions per module
    2 | Macro / Micro Architecture
    Micro
    Architecture
    

    View Slide

13. Creator: INNOQ | http://isa-principles.org
    > All modules part of one system
    > Goal: Minimal Macro Architecture
    > Macro Architecture stable
    2 | Macro / Micro Architecture
    Why Macro
    Architecture?
    

    View Slide

14. 3 | Container
    Creator: INNOQ / http://isa-principles.org
    

    View Slide

15. Creator: INNOQ | http://isa-principles.org
    > Modules = containers (or VMs, processes …)
    3 | Container
    

    View Slide

16. Creator: INNOQ | http://isa-principles.org
    > Decoupling
    > Independent …
    – technical decision
    – scalability
    – deployment
    3 | Container
    Process,
    Container,
    VM
    

    View Slide

17. 4 | Integration & Communication
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

18. Creator: INNOQ | http://isa-principles.org
    > Integrate modules to become a system
    Synchronous, asynchronous, or UI
    4 | Integration & Communication
    

    View Slide

19. Creator: INNOQ | http://isa-principles.org
    > Limit options
    > Just one: not enough
    4 | Integration & Communication
    

    View Slide

20. Creator: INNOQ | http://isa-principles.org
    > Define technical communication protocol
    > REST, messaging …
    4 | Integration & Communication
    

    View Slide

21. 5 | Authentication & Metadata
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

22. Creator: INNOQ | http://isa-principles.org
    > Standardize metadata e.g. for authentication or
    tracing
    > Authorization in each module
    5 | Authentication & Metadata
    

    View Slide

23. 6 | Independent Continuous
    Delivery Pipeline
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

24. Creator: INNOQ | http://isa-principles.org
    > Microservices can only be
    deployed independently …
    > ... if pipelines are independent
    6 | Independent Continuous Delivery Pipeline
    

    View Slide

25. 7 | Standardize Operations
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

26. Creator: INNOQ | http://isa-principles.org
    > Configuration,
    log analysis, tracing,
    monitoring, deployment
    > Reduce effort
    7 | Standardize Operations
    

    View Slide

27. 8 | Standards: Interface only
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

28. Creator: INNOQ | http://isa-principles.org
    > Standardize e.g. configuration
    … or log interface
    > Do not standardize the library!
    8 | Standards: Interface only
    

    View Slide

29. 9 | Resilience
    Creator: INNOQ | http://isa-principles.org
    

    View Slide

30. Creator: INNOQ | http://isa-principles.org
    > Module still work … if other modules fail
    9 | Resilience
    

    View Slide

31. Creator: INNOQ | http://isa-principles.org
    > Module still work … if moved somewhere else
    9 | Resilience
    

    View Slide

32. Creator: INNOQ | http://isa-principles.org
    Independent System Architecture
    Container
    Modules
    Macro / Micro
    Architecture
    Independent
    Continuous
    Delivery Pipeline
    Resilience
    Integration &
    Communication
    Authentication
    & Metadata
    Standardized
    Operations
    Standards:
    Interface only
    

    View Slide

33. Creator: INNOQ | http://isa-principles.org
    COPYRIGHT
    This presentation is copyrighted
    under a Creative Commons
    Attribution-ShareAlike 3.0 /
    Unported License
    http://creativecommons.org/licenses/by-sa/3.0/
    Creator
    

    View Slide