Solid series: Single Responsibility Principle (SRP)
- SRP (Single Responsibility Principle):
- Definition: SRP is the first letter of the SOLID design principles, which stands for Single Responsibility Principle.
- Concrete aspects of a system: Responsibilities in a system such as authentication and data management should be separated into different classes.
- Example of an SRP violation:
- A class in TypeScript that combines database operations, authentication, and sending emails violates the SRP.
- Refactoring to follow SRP:
- Separate concerns into different classes like DatabaseOperations, Authentication, and EmailSender classes to adhere to SRP.
- Detecting SRP violations:
- Class changes for multiple reasons and too many dependencies in a class can indicate SRP violations.
- Code implementation of SRP:
- Python, Java, TypeScript, and C# examples of using well-structured classes to follow SRP.
- Benefits of SRP:
- SRP ensures high-quality code by enforcing classes to have a single responsibility.
- Common misconceptions of SRP:
- Too much abstraction and misunderstanding of the principle can lead to misconceptions.
- SRP in modular monolithic architecture:
- Each module focuses on a specific function, maintaining modularity and clarity in code structure.
- SRP in microservices architecture:
- Each microservice handles a specific business capability, enabling independent deployment and scalability.
