Most Asked System Design Patterns:
System design patterns are reusable solutions to common software engineering problems that can help engineers design scalable, maintainable, and efficient systems. Some of the most commonly asked system design patterns include:
Model-View-Controller (MVC) Pattern: This pattern separates an application into three interconnected components - the model (data), the view (user interface), and the controller (input and application logic). It is commonly used in web development and can help organize code and improve maintainability.
Singleton Pattern: This pattern restricts the instantiation of a class to one object and provides a global point of access to it. It is often used for managing resources that should only exist in one instance, such as database connections or logging services.
Factory Pattern: This pattern provides an interface for creating objects, but allows subclasses to decide which class to instantiate. It can help simplify code and make it more flexible and extensible.
Observer Pattern: This pattern defines a one-to-many relationship between objects so that when one object changes state, all its dependents are notified and updated automatically. It is often used for event handling and can help reduce coupling between components.
Decorator Pattern: This pattern allows behavior to be added to an individual object, either statically or dynamically, without affecting the behavior of other objects from the same class. It can help simplify code and make it more modular and reusable.
Adapter Pattern: This pattern allows incompatible interfaces to work together by creating a wrapper class that acts as a translator between the two interfaces. It is often used for integrating legacy code with newer systems.
Facade Pattern: This pattern provides a simplified interface to a larger system, hiding its complexity from the user. It can help improve usability and reduce the learning curve for new developers.
Builder Pattern: This pattern separates the construction of a complex object from its representation, allowing it to be created step by step. It can help improve code readability and make it easier to manage complex objects.
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