ConcurrentLinkedDeque
ConcurrentLinkedDeque is a thread-safe, non-blocking, and lock-free double-ended queue (deque) implementation in Java, part of the java.util.concurrent package. It allows elements to be inserted and removed from both ends efficiently in concurrent environments without explicit synchronization. This data structure is designed for high-performance scenarios where multiple threads need to access a shared deque simultaneously.
Developers should use ConcurrentLinkedDeque when building multi-threaded applications that require a concurrent deque with high throughput and low contention, such as in producer-consumer patterns, task scheduling, or message queues. It is ideal for scenarios where lock-free operations are preferred to avoid deadlocks and improve scalability, especially in systems with many threads accessing the deque frequently.