Low delayed primitive concurrent queue framework technical analysis in the java class library
Low delayed primitive concurrent queue framework technical analysis in the java class library
In the development of high -performance and low -delay applications, the use of concurrent queues is a very common demand.The Java class library provides many implementation of concurrent queue, but in many cases, these implementation still cannot meet the harsh delayed requirements.
To solve this problem, the Java class library introduces a low -delayed original concurrent queue framework. This framework provides a high -performance and low -delay queue implementation, which is suitable for scenes that require very fast processing tasks.
The core idea of low latency primitive concurrent queue framework is to use lock -free algorithm and memory barrier technology to reduce lock competition and memory access delay.Below we will introduce the implementation principles and use methods of the framework in detail.
First, let's take a look at the basic component of the framework:
1. Questing: The queue in the low -delayed original concurrent queue frame is a ring array, which is divided into multiple grooves.Each slot contains a task or a mark to indicate whether the slot is empty or has been consumed.
2. Producer: Producer is the role of the task into the queue.Each producer will try to get a slot and put the task in the slot.If the groove has been occupied by other producers, it will be spiny until there is available slots.
3. Consumer: Consumers are the role that gets tasks and executes from the queue.Consumers will try to get a slot and determine whether the slot includes tasks.If the slot is empty, it will be spiny until there is a task available.
Because the low -delayed original concurrent queue frame uses a lock -free algorithm, the performance is very high under high concurrency.At the same time, the use of memory barrier technology can ensure the visibility and sequence of tasks, and avoid errors caused by the optimization of compilers and processors.
Below is a simple use of a low -delayed original concurrent queue framework Java code example:
import java.util.concurrent.ConcurrentQueue;
public class LowLatencyQueueExample {
public static void main(String[] args) {
ConcurrentQueue<String> queue = new ConcurrentQueue<>();
// Producer thread
Thread producerThread = new Thread(() -> {
for (int i = 0; i < 10; i++) {
String task = "Task " + i;
queue.put(task);
System.out.println("Produced: " + task);
}
});
// Consumer thread
Thread consumerThread = new Thread(() -> {
for (int i = 0; i < 10; i++) {
String task = queue.take();
System.out.println("Consumed: " + task);
}
});
producerThread.start();
consumerThread.start();
}
}
In the above example, we created a CONCURRENTQUEUE object as a queue, and used the PUT method to put the task into the queue in the producer thread.
In this way, we can achieve high -performance and low -delay tasks, and can avoid performance problems caused by locking competition and memory access delay.
In summary, the low -delayed primitive concurrent queue framework is a high -performance and low -delay queue implementation provided in the Java class library. It is suitable for scenarios that require very fast processing tasks.By using lock -free algorithm and memory barrier technology, this framework can reduce lock competition and memory access delay, thereby improving performance and response speed.
