How does the Single Responsibility Principle (SRP) affect the stability and reliability of software?

The Single Responsibility Principle (SRP) states that each module or class should have only one reason to change, meaning it should be responsible for a single specific task.

This affects the stability and reliability of software in the following ways:

• Simplified maintenance: Changes in one part of the system do not affect others, reducing the risk of errors.
• Improved readability: The code becomes clearer, making it easier to understand what each component does.
• Easier testing: Modules with a single responsibility are easier to cover with tests, which improves quality.
• Reduced coupling: Dependency between parts of the system decreases, making it more flexible and resilient to changes.

For example, if a class is responsible both for database operations and validation logic, changing validation requirements could lead to errors in database operations. Separating these responsibilities into different classes reduces such risks.