Advantages of the Singleton Design Pattern

1. Single Instance

• Advantage: Ensures that a class has only one instance.
• Explanation: This avoids unnecessary instantiation and guarantees that there’s a single point of access to that instance.

2. Global Point of Access

• Advantage: Provides a global point of access to the instance.
• Explanation: Any part of the application can access the Singleton instance, promoting a centralized and easily reachable point for shared resources.

3. Lazy Initialization

• Advantage: Supports lazy initialization.
• Explanation: The instance is created only when it is needed for the first time, improving resource efficiency.

4. Efficient Resource Management

• Advantage: Efficiently manages resources.
• Explanation: In scenarios where creating multiple instances is resource-intensive, the Singleton pattern ensures optimal usage of resources.

5. Prevents Duplicate Configuration

• Advantage: Helps prevent duplicate configuration settings.
• Explanation: In scenarios where a single configuration should be maintained throughout the application, Singleton ensures that only one configuration instance exists.

Singleton Design Pattern is a creational design pattern that ensures a class has only one instance and provides a global point of access to it. This pattern is particularly useful when exactly one object is needed to coordinate actions across the system.