Kotlin

The Service-Oriented Architecture (SOA) pattern structures an application as a collection of loosely coupled, interoperable services. Each service encapsulates a specific business function and exposes it through a well-defined interface, typically a network call. This promotes modularity, reusability, and independent …

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The Microservices pattern structures an application as a collection of loosely coupled, independently deployable services, modeled around a business domain. Each service owns its data and communicates via lightweight mechanisms, often an HTTP REST API. This example demonstrates a simplified scenario with two …

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The N-tier pattern organizes an application into distinct layers, each with a specific responsibility. This improves maintainability, testability, and scalability by decoupling concerns. A typical N-tier architecture includes a Presentation Tier (UI), a Business Logic Tier (application logic), and a Data Access Tier …

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The Client-Server pattern distributes applications into two parts: clients, which request resources or services, and servers, which provide those resources or services. This example uses Kotlin Coroutines and Channels for asynchronous communication. The server listens on a channel for client requests (strings) and …

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The Self-Contained Systems pattern focuses on creating modules that have everything required to function – dependencies are minimized or explicitly provided, and the module exports only necessary functionality. This promotes independence, testability, and resilience to external changes. The Kotlin example below …

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The Monolith pattern represents a traditional software architecture where all components of an application are tightly coupled and deployed as a single unit. It’s characterized by a unified codebase, often with shared libraries and data models. This example demonstrates a simplified monolith in Kotlin, …

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The Microkernel pattern aims to create a small, core system (the microkernel) and extend its functionality through plugins or modules. This promotes flexibility, maintainability, and easier extension without modifying the core. In this Kotlin example, Microkernel is a minimal class that provides a central event bus. …

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The Clean Architecture pattern aims to create systems independent of frameworks, databases, UI, and any external agency. It achieves this by dividing the application into concentric layers: Entities (business rules), Use Cases (application logic), Interface Adapters (presenters, controllers), and Frameworks & …

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The Onion Architecture is a design pattern focused on separation of concerns, aiming to create a loosely coupled, testable, and maintainable system. The core business logic (Entities and Use Cases) resides in the innermost layers, independent of external frameworks or databases. Outer layers represent mechanisms like …

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The Hexagonal Architecture (also known as Ports and Adapters) aims to create loosely coupled software by separating the core business logic from external concerns like databases, UI, or external services. The core logic interacts with the outside world only through well-defined ports (interfaces). Adapters then …

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