1. Modular Design: Modular design is a way of dividing a system into independent units called modules, in which each module accomplishes their own task. This makes the system more flexible and easier to modify as each module can be independently developed, tested and deployed.
2. Use of Design Patterns: Using design patterns ensures consistency and standardization in code, making it easier to change the system. Design patterns like Singleton, Factory, Decorator, and Observer help increase extensibility and maintainability of the codebase.
3. API Design: Designing APIs that are easy to use, consistent and provide cohesive functionality help in extending the system without affecting other parts of the codebase. A well-designed API also encourages other developers to build on top of it.
4. Data Abstraction: Abstraction is the process of removing unnecessary details, making only the relevant details visible to the user. Abstraction helps to hide the complexity of the system, making it easier to extend.
5. Separation of Concerns: Separating concerns helps divide the codebase into smaller, more manageable and modular parts, thereby increasing extensibility. By separating functionality, developers can easily add, remove or modify parts without affecting other parts of the codebase.
6. Use of Plugins: Plugins enable developers to extend the functionality of a system without changing the core code. This is a powerful way to increase extensibility, as developers can easily add new features or modify existing ones.
7. Dynamic Configuration: Using dynamic configuration allows the system to be modified at runtime without requiring a system restart. This approach facilitates extensibility as it allows easy addition, removal or modification of parts of the system in real-time.
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