Singleton-Design-Pattern.md

Singleton Design Pattern

Intent

• Ensure that only one instance of a class is created.
• Provide a global point of access to the object.

Implementations

• Early Instantiation
• Non-Thread Safe, Lazy Instantiation
• Thread Safe, Lazy Instantiation
• Thread Safe, Lazy Instantiation using Double locking
• Thread Safe, Serializable, Lazy Instantiation using Double locking

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References

• https://www.oodesign.com/
• https://refactoring.guru/