--- title: "Source Wiki Home" created: 2026-07-02 updated: 2026-07-02 type: source-page status: imported namespace: software-architecture-metapatterns source_repository: https://github.com/denyspoltorak/metapatterns source_wiki: https://github.com/denyspoltorak/metapatterns/wiki source_path: "Home.md" source_url: https://github.com/denyspoltorak/metapatterns/wiki/Home source_license_note: "See namespace README; preserve attribution and source links." --- # Source Wiki Home > Imported source page from Denys Poltorak's *Architectural Metapatterns* wiki. Source path: `Home.md`. # Architectural Patterns Wiki This site has multiple goals: 1. #### Become a wiki of architectural patterns There are many patterns here. I invested over a year in collecting architectural patterns and styles that relate to the structure of a system. You will find here [[wiki/concepts/source/basic-metapatterns/services|*Microservices*]] and [[wiki/concepts/source/implementation-metapatterns/microkernel|*Microkernel*]] but not [*Test-Driven Development*](https://herbertograca.com/2018/08/27/distillation-of-tdd-where-did-it-all-go-wrong/) (which is a methodology pattern) or [*Dead Letter Channel*](https://www.enterpriseintegrationpatterns.com/patterns/messaging/DeadLetterChannel.html) (a communication pattern). 2. #### Show that patterns make a hierarchy There are way too many patterns. Thus some of them are similar, as there are only so many different things a human mind can invent. This wiki groups patterns according to their structure and function, and describes specific features, use cases, benefits and drawbacks for each group of patterns as a whole to outline the big picture and avoid repetition. For example, [[wiki/concepts/source/extension-metapatterns/orchestrator|*Scatter-Gather* and *MapReduce*]] are almost identical (*Scatter-Gather* lacks the Reduce step) while their relation to [[wiki/concepts/source/extension-metapatterns/orchestrator|*Saga*]] is more remote but still traceable (each of the three patterns coordinates components of a system). 3. #### Provide an intuitive way to study patterns Having patterns arranged into a hierarchy greatly reduces the amount of information one must remember to learn a new pattern as it differs from others in its group in minor details. Also, if we can enumerate patterns and see how they relate to each other, then we can [[wiki/concepts/source/analytics/comparison-of-architectural-patterns|compare them]] and even spot empty spaces in our knowledge - which is how I discovered [[wiki/concepts/source/fragmented-metapatterns/polyglot-persistence|*Polyglot Persistence*]]. Places to start: * [[wiki/concepts/source/appendices/index-of-patterns|Index of patterns]] * [[wiki/concepts/source/introduction/about-this-book|Diagrams and notation]] * [[wiki/concepts/source/introduction/metapatterns|The underlying theory]] You can download this as a book from [GitHub](https://github.com/denyspoltorak/metapatterns) or [Leanpub](https://leanpub.com/metapatterns) (which also features a few testimonials and a detailed table of contents). The work is licensed under [Creative Commons Attribution 4.0 International](https://creativecommons.org/licenses/by/4.0/). Any help with the content, including adding new patterns or correcting the ones already described, is appreciated. ## Table of Contents: ### [[wiki/concepts/source/introduction/introduction|Introduction]] - [[wiki/concepts/source/introduction/about-this-book|About this book]] - [[wiki/concepts/source/introduction/metapatterns|Metapatterns]] - [[wiki/concepts/source/introduction/system-topologies|System topologies]] ### [[wiki/concepts/source/foundations-of-software-architecture/foundations-of-software-architecture|Foundations of software architecture]] - [[wiki/concepts/source/foundations-of-software-architecture/modules-and-complexity|Modules and complexity]] - [[wiki/concepts/source/foundations-of-software-architecture/forces-asynchronicity-and-distribution|Forces, asynchronicity, and distribution]] - [[wiki/concepts/source/foundations-of-software-architecture/four-kinds-of-software|Four kinds of software]] - [[wiki/concepts/source/foundations-of-software-architecture/arranging-communication|Arranging communication]] - [[wiki/concepts/source/foundations-of-software-architecture/programming-and-architectural-paradigms|Programming and architectural paradigms]] - [[wiki/concepts/source/foundations-of-software-architecture/orchestration|Orchestration]] - [[wiki/concepts/source/foundations-of-software-architecture/choreography|Choreography]] - [[wiki/concepts/source/foundations-of-software-architecture/shared-data|Shared data]] - [[wiki/concepts/source/foundations-of-software-architecture/comparison-of-communication-styles|Comparison of communication styles]] ### [[wiki/concepts/source/basic-metapatterns/basic-metapatterns|Basic metapatterns]] - [[wiki/concepts/source/basic-metapatterns/monolith|Monolith]] - [[wiki/concepts/source/basic-metapatterns/shards|Shards]] - [[wiki/concepts/source/basic-metapatterns/layers|Layers]] - [[wiki/concepts/source/basic-metapatterns/services|Services]] - [[wiki/concepts/source/basic-metapatterns/pipeline|Pipeline]] ### [[wiki/concepts/source/extension-metapatterns/extension-metapatterns|Extension metapatterns]] - [[wiki/concepts/source/extension-metapatterns/middleware|Middleware]] - [[wiki/concepts/source/extension-metapatterns/shared-repository|Shared Repository]] - [[wiki/concepts/source/extension-metapatterns/proxy|Proxy]] - [[wiki/concepts/source/extension-metapatterns/orchestrator|Orchestrator]] - [[wiki/concepts/source/extension-metapatterns/sandwich|Sandwich]] ### [[wiki/concepts/source/fragmented-metapatterns/fragmented-metapatterns|Fragmented metapatterns]] - [[wiki/concepts/source/fragmented-metapatterns/layered-services|Layered Services]] - [[wiki/concepts/source/fragmented-metapatterns/polyglot-persistence|Polyglot Persistence]] - [Backends for Frontends (BFF)]() - [Service-Oriented Architecture (SOA)]() - [[wiki/concepts/source/fragmented-metapatterns/hierarchy|Hierarchy]] ### [[wiki/concepts/source/implementation-metapatterns/implementation-metapatterns|Implementation metapatterns]] - [[wiki/concepts/source/implementation-metapatterns/plugins|Plugins]] - [[wiki/concepts/source/implementation-metapatterns/hexagonal-architecture|Hexagonal Architecture]] - [[wiki/concepts/source/implementation-metapatterns/microkernel|Microkernel]] - [[wiki/concepts/source/implementation-metapatterns/mesh|Mesh]] ### [[wiki/concepts/source/analytics/analytics|Analytics]] - [[wiki/concepts/source/analytics/comparison-of-architectural-patterns|Comparison of architectural patterns]] - [[wiki/concepts/source/analytics/sharing-functionality-or-data-among-services|Sharing functionality or data among services]] - [[wiki/concepts/source/analytics/pipelines-in-architectural-patterns|Pipelines in architectural patterns]] - [[wiki/concepts/source/analytics/dependency-inversion-in-architectural-patterns|Dependency inversion in architectural patterns]] - [[wiki/concepts/source/analytics/indirection-in-commands-and-queries|Indirection in commands and queries]] - [[wiki/concepts/source/analytics/ambiguous-patterns|Ambiguous patterns]] - [[wiki/concepts/source/analytics/architecture-and-product-life-cycle|Architecture and product life cycle]] - [[wiki/concepts/source/analytics/real-world-inspirations-for-architectural-patterns|Real-world inspirations for architectural patterns]] - [[wiki/concepts/source/analytics/the-heart-of-software-architecture|The heart of software architecture]] - [[wiki/concepts/source/analytics/cohesers-and-decouplers|Cohesers and decouplers]] - [[wiki/concepts/source/analytics/deconstructing-patterns|Deconstructing patterns]] - [[wiki/concepts/source/analytics/choose-your-own-architecture|Choose your own architecture]] ### [[wiki/concepts/source/appendices/appendices|Appendices]] - [[wiki/concepts/source/appendices/acknowledgements|Acknowledgements]] - [[wiki/concepts/source/appendices/books-referenced|Books referenced]] - [[wiki/concepts/source/appendices/copyright|Copyright]] - [[wiki/concepts/source/appendices/disclaimer|Disclaimer]] - [[wiki/concepts/source/appendices/evolutions-of-architectures|Evolutions of architectures]] - [[wiki/concepts/source/appendices/evolutions-of-a-monolith-that-lead-to-shards|Evolutions of a Monolith that lead to Shards]] - [[wiki/concepts/source/appendices/evolutions-of-a-monolith-that-result-in-layers|Evolutions of a Monolith that result in Layers]] - [[wiki/concepts/source/appendices/evolutions-of-a-monolith-that-make-services|Evolutions of a Monolith that make Services]] - [[wiki/concepts/source/appendices/evolutions-of-a-monolith-that-rely-on-plugins|Evolutions of a Monolith that rely on Plugins]] - [[wiki/concepts/source/appendices/evolutions-of-shards-that-share-data|Evolutions of Shards that share data]] - [[wiki/concepts/source/appendices/evolutions-of-shards-that-share-logic|Evolutions of Shards that share logic]] - [[wiki/concepts/source/appendices/evolutions-of-layers-that-make-more-layers|Evolutions of Layers that make more layers]] - [[wiki/concepts/source/appendices/evolutions-of-layers-that-help-large-projects|Evolutions of Layers that help large projects]] - [[wiki/concepts/source/appendices/evolutions-of-layers-to-improve-performance|Evolutions of Layers to improve performance]] - [[wiki/concepts/source/appendices/evolutions-of-layers-to-gain-flexibility|Evolutions of Layers to gain flexibility]] - [[wiki/concepts/source/appendices/evolutions-of-services-that-restructure-services|Evolutions of Services that restructure services]] - [[wiki/concepts/source/appendices/evolutions-of-services-that-add-layers|Evolutions of Services that add layers]] - [[wiki/concepts/source/appendices/evolutions-of-a-pipeline|Evolutions of a Pipeline]] - [[wiki/concepts/source/appendices/evolutions-of-a-middleware|Evolutions of a Middleware]] - [[wiki/concepts/source/appendices/evolutions-of-a-shared-repository|Evolutions of a Shared Repository]] - [[wiki/concepts/source/appendices/evolutions-of-a-proxy|Evolutions of a Proxy]] - [[wiki/concepts/source/appendices/evolutions-of-an-orchestrator|Evolutions of an Orchestrator]] - [[wiki/concepts/source/appendices/evolutions-of-a-sandwich|Evolutions of a Sandwich]] - [[wiki/concepts/source/appendices/format-of-a-metapattern|Format of a metapattern]] - [[wiki/concepts/source/appendices/glossary|Glossary]] - [[wiki/concepts/source/appendices/history-of-changes|History of changes]] - [[wiki/concepts/source/appendices/index-of-patterns|Index of patterns]]