According to GoF definition of proxy design pattern, a proxy object provide a surrogate or placeholder for another object to control access to it. A proxy is basically a substitute for an intended object which we create due to many reasons e.g. security reasons or cost associated with creating fully initialized original object. 1. When […]
Flyweight Design Pattern
As per GoF definition, flyweight design pattern enables use sharing of objects to support large numbers of fine-grained objects efficiently. A flyweight is a shared object that can be used in multiple contexts simultaneously. The flyweight acts as an independent object in each context. 1. When to use flyweight design pattern We can use flyweight […]
Facade Design Pattern
Facade design pattern provide a unified interface to a set of interfaces in a subsystem. Facade defines a higher-level interface that makes the subsystem easier to use.
Composite Design Pattern
Composite design pattern is a structural pattern which modifies the structure of an object. This pattern is most suitable in cases where you need to work with objects which form a tree like hierarchy. In that tree, each node/object (except root node) is either composite or leaf node. Implementing the composite pattern lets clients treat […]
Bridge Design Pattern
Bridge design pattern is used to decouple a class into two parts – abstraction and it’s implementation – so that both can evolve in future without affecting each other. It increases the loose coupling between class abstraction and it’s implementation. Table of Contents Design participants of bridge design pattern When we need bridge design pattern […]