Outer layers can communicate with ANY inner layer (compare this to N-Tier where each layer can only communicate with the one below it). The first thing to notice here is the direction of the dependencies. Source: Clean Architecture, Jason Taylor - Goto Conference So, compared to N-Tier, what is Clean Architecture and how is it different? This approach is not new, but it is also not nearly as common as it perhaps should be. Onion Architecture, Hexagonal Archecture, Screaming Architecture, and others. This architecture has had many names over the years. This is where the meat of an N-Tier application is.
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However, like many professional software engineers, I’m always on the look out as to how I can improve my architecture when designing applications. This architecture enabled me to build loosely coupled, testable applications, and has served me well so far.
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I rely heavily on interfaces, and learnt a long time ago that IoC (Inversion of Control) is your friend.
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Dan Does Code Clean Architecture - An Introductionįor a long time, I have been using the classic “N-Tier” architecture (UI Layer -> Logic Layer -> Data Layer) in most of the applications I build.