Top 10 Design Pattern — Types, Examples
A “design pattern” is a reusable solution to a commonly occurring problem within a given context in software design. Design patterns are formalized best practices that the programmer can use to solve common problems when designing an application or system.
Reusable: Design patterns provide solutions that are not tied to a specific problem, making them reusable in different scenarios.
Proven: These patterns have been evolved and proven over time by the developer community, ensuring they are reliable.
Expressive: They provide a standard terminology and are specific to particular scenarios, making them easy to understand and communicate.
This repository provides a collection of design pattern examples implemented in PHP. Each directory contains the implementation of a specific design pattern along with a detailed explanation, use case, and instructions on how to run the examples. Design patterns are essential in software engineering as they provide proven solutions to common design problems.
- Adapter Pattern
- Caching Pattern
- Circuit Breaker Pattern
- Factory Pattern
- Load Balancer Pattern
- Observer Pattern
- Repository Pattern
- Singleton Pattern
- Strategy Pattern
Overview: Allows incompatible interfaces to work together by acting as a bridge.
Use Case: Integrating legacy code with new systems.
Overview: Temporarily stores data in accessible storage to reduce access time and improve performance.
Use Case: Caching frequently accessed resources in web applications.
Overview: Detects failures and prevents the system from constantly retrying requests that are likely to fail.
Use Case: Handling failures in a microservices architecture.
Overview: Creates objects without specifying the exact class of object that will be created.
Use Case: When the exact types and dependencies of the objects to be created are not known until runtime.
Overview: Distributes incoming network traffic across multiple servers to ensure no single server bears too much demand.
Use Case: Managing web server load to improve availability and reliability.
Overview: Defines a one-to-many dependency between objects so that when one object changes state, all dependents are notified and updated automatically.
Use Case: Implementing distributed event-handling systems.
Overview: Encapsulates the logic needed to access data sources, mediating between the domain and data mapping layers.
Use Case: Centralizing data logic or business logic in applications.
Overview: Ensures a class has only one instance and provides a global point of access to it.
Use Case: Managing shared resources like database connections or configuration settings.
Overview: Defines a family of algorithms, encapsulates each one, and makes them interchangeable.
Use Case: Selecting an algorithm at runtime, such as different payment methods.
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Clone the repository:
git clone https://github.com/TravelXML/design-pattern-types-and-examples.git
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Navigate to the desired pattern directory:
cd design-pattern-types-and-examples/<Pattern\ Directory>
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Run the PHP script:
php client.php