essential Design Patterns for Building Scalable and Maintainable Code
design patterns are reusable solutions to commonly occurring problems in software design.
Design patterns can be categorized in multiple ways, but the most popular one is the following:
- Creational design patterns
- Structural design patterns
- Behavioral design patterns
- Concurrency design patterns
- Architectural design patterns
[CS-BCA]*
Creational Design Patterns
These patterns deal with object creation mechanisms which optimize object creation compared to a basic approach. Creational design patterns solve this problem by somehow controlling object creation.
Some of the popular design patterns in this category are:
- Factory method
- Abstract factory
- Builder
- Prototype
- Singleton
[FAB-PS]*
Structural Design Patterns
These patterns deal with object relationships. They ensure that if one part of a system changes, the entire system doesn’t need to change along with it. The most popular patterns in this category are:
- Adapter
- Bridge
- Composite
- Decorator
- Facade
- Flyweight
- Proxy
[ABCD_FFP]*
Behavioral Design Patterns
These types of patterns recognize, implement, and improve communication between disparate objects in a system. They help ensure that disparate parts of a system have synchronized information.
Popular examples of these patterns are:
- Chain of responsibility
- Command
- Iterator
- Mediator
- Memento
- Observer
- State
- Strategy
- Visitor
[CCI-MMO-SSV]*
Concurrency Design Patterns
These types of design patterns deal with multi-threaded programming paradigms. Some of the popular ones are:
- Active object
- Nuclear reaction
- Scheduler
[ANS]*
Architectural Design Patterns
Design patterns which are used for architectural purposes. Some of the most famous ones are:
- MVC (Model-View-Controller)
- MVP (Model-View-Presenter)
- MVVM (Model-View-ViewModel)
Let’s remember them all: 😉
[CS-BCA]*
C — FAB-PS
S — ABCD_FFP
B — CCI-MMO-SSV
C — ANS
A — MVC, MVP, MVVM
* - mnemonic
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