YAGNI (You Aren&#t Gonna Need It)

Core Principle

Only implement features when you actually need them, not when you think you might need them in the future.

Examples

Premature Abstraction (Bad)

Simple Implementation (Good)

Real-World Scenarios

E-commerce Example

Common Anti-Patterns

1. Building complex configuration systems before needed
2. Creating elaborate inheritance hierarchies for future extensibility
3. Adding database fields for potential future features
4. Implementing unneeded API endpoints
5. Creating generic solutions for specific problems

Benefits

1. Reduced codebase complexity
2. Lower maintenance cost
3. Faster development cycles
4. Better focus on current requirements
5. Less technical debt

Exception Cases

1. Core architecture decisions
2. Data structures that are expensive to change later
3. Security considerations
4. Regulatory compliance requirements

The above is the detailed content of YAGNI (You Aren&#t Gonna Need It). For more information, please follow other related articles on the PHP Chinese website!