The technical principles of the low -delayed primitive concurrent queue in the java class library

The technical principles of the low -delayed primitive concurrent queue in the java class library introduction: In high -performance computing and distributed systems, low -delayed concurrent queues are crucial.There is a special queue implementation in the Java class library, known as the raw concurrent queue, which optimizes the high -concurrency scene to achieve low -delayed data interaction.This article will explore the technical principles of this queue and provide some Java code examples. 1. The basic concept of primitive concurrent queue The original concurrency queue refers to a data structure that efficiently supports concurrent writing operations.It can provide lower latency in concurrent scenes and ensure the order of data. 2. Implementation principle The implementation principle of the original concurrency queue is mainly based on the following two key technologies: 2.1 No lock algorithm The implementation of the original concurrent queue uses a lock -free algorithm to avoid locking the entire queue.This can reduce competition between threads and increase the overall throughput.Common lock -free algorithms include CAS (Compare and Swap) and ABA (Atomical, Reference Integrity, and Consistetency). 2.2 Memory sequence consistency When the original concurrent queue involves multi -threaded operations, the order of data is ensured by using various sorting rules in memory barriers and memory models.This can avoid the problem of heavy sorting and memory visibility. 3. The original concurrent queue in the java library The Java class library provides a variety of primitive concurrent queue implementation, the most commonly used is ConcurrentLinkedQueue.This implementation is based on the linked list structure and uses CAS operations to ensure thread safety and locking. The following is a simple sample code, which demonstrates the basic operation of using ConcurrentLinkedQueue: import java.util.concurrent.ConcurrentLinkedQueue; public class ConcurrentQueueExample { public static void main(String[] args) { ConcurrentLinkedQueue<String> queue = new ConcurrentLinkedQueue<>(); // Add elements queue.offer("Element 1"); queue.offer("Element 2"); queue.offer("Element 3"); // Get and delete the queue head element String element = queue.poll(); System.out.println("Polled element: " + element); // Get it but not delete the queue head element String peekedElement = queue.peek(); System.out.println("Peeked element: " + peekedElement); // Traversing queue for (String item : queue) { System.out.println("Item: " + item); } } } 4. Summary The original concurrent queue is an important data structure in the Java library, which can provide lower delay and high throughput in high concurrent scenes.The principle of implementation is based on the consistency of lock -free algorithms and memory order. By optimizing the competition between threads and the order of ensuring data, high -performance data interaction is achieved.In practical applications, the appropriate original concurrent queue can be selected according to specific needs to improve the performance of the system.