Reduce the overhead of acquiring a lock by first testing the locking criterion (the "lock hint") without actually acquiring the lock. Only if the locking criterion appears to be true does the actual locking logic proceed. Double-checked locking in Java helps in optimizing performance and ensuring thread safety.
The Proxy pattern in Java provides a surrogate or placeholder to effectively control access to an object, enhancing security and resource management.
Ensure a Java class only has one instance, and provide a global point of access to this singleton instance.
Real-world example
The Virtual Proxy Design Pattern is a crucial component in Java design patterns, enabling efficient resource management and performance optimization through controlled object creation. It provides a surrogate or placeholder for another object to control its creation and access, particularly when dealing with resource-intensive operations.
