Category: Architecture & Design

This creational pattern assures that just one object can get instantiated of that class.

Concrete Factory … is a class that creates objects without exposing the instantiation logic. Abstract Factory … is a class

The purpose of that behavioral design pattern is to add a new operation without adding it to the existing object

As the name of this creational design pattern already shows dependencies are getting injected (as parameter) instead of creating them

That structural design pattern allows to create trees of objects and to interact with them as they are just a

Architectural pattern … Pattern on a high level – Multi-Layer (e.g. Text editor) – Client-Server (e.g. Banking) – Peer-To-Peer (e.g.

There are three major ways for a message exchange: Fire-And-Forget, Reply-Response and Request-Callback. Fire-And-Forget (one-way) A Client sends a message

1. Creation 1.1 Factory 1.2 Singleton 1.3 Dependency injection 1.4 Objectpool … is a pool of already initialized objects, like

In this behavioral design pattern all observer getting notified of a change from a subject they are registered at.