Structural Patterns

Reverse Proxy

The Reverse Proxy pattern involves a server that sits in front of one or more backend servers and intercepts client requests. Instead of clients connecting directly to backend servers, they connect to the reverse proxy, which then forwards the requests to the appropriate backend server. The reverse proxy then receives …

Layered Architecture

architectural structural

The Layered Architecture pattern organizes an application into distinct layers, each with a specific role and responsibility. Layers are arranged hierarchically, with each layer building upon the services provided by the layer below. This separation promotes modularity, maintainability, and testability by reducing …

Proxy

structural object-structural

The Proxy pattern provides a surrogate or placeholder for another object to control access to it. This can be used to add functionality before or after the original object’s method is executed, or to simply delay the creation or access of the expensive object until it’s actually needed. It essentially …

Bridge

structural GOF

The Bridge pattern is a structural design pattern that lets you split an interface into separate interfaces. This pattern is useful when you want to avoid a tight coupling between an abstraction and its implementation, allowing you to vary them independently. It’s particularly effective when you anticipate that both …

Module

structural software architecture

The Module pattern is a structural design pattern that aims to reduce the complexity of a software system by dividing it into independent, interchangeable modules. Each module encapsulates a specific set of related functionalities, offering a well-defined interface to interact with other parts of the system. This …

Facade

creational structural

The Facade pattern provides a simplified interface to a complex system of classes, objects, and subsystems. It abstracts away the intricacies of the underlying components, offering clients a higher-level, easier-to-use entry point. Essentially, it’s an “entry point” object that encapsulates the interaction …

Microkernel

architectural structural DDD

The Microkernel pattern is an architectural style that structures an application as a core system with minimal functionality, surrounded by plugins or extensions that provide additional features. The core handles essential operations and communication, while plugins implement specific functionalities. This separation …

N-Tier

architectural structural

The N-Tier pattern is an architectural pattern that organizes an application into distinct layers, each responsible for a specific aspect of the application. These tiers are logically and physically separated, promoting modularity, maintainability, and scalability. Common tiers include the Presentation Tier (UI), …

Peer-to-Peer

distributed structural networking

The Peer-to-Peer (P2P) pattern is a distributed application architecture that eliminates the need for a central server. Instead, individual nodes (peers) in the network share resources directly with each other. Each peer acts as both a client and a server, contributing its own resources (storage, bandwidth, processing …

Shared Kernel

DDD structural

The Shared Kernel pattern addresses the challenge of integrating two or more distinct bounded contexts in Domain-Driven Design. It arises when a small, well-defined part of the domain model is inherently shared and crucial to the operation of multiple contexts. Instead of duplicating this logic (leading to …