ISA Principles - Speaker Deck

ISA Principles

by Independent Systems Architecture

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

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

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

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

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

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

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

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

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

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

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

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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?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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

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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