Introduction to the low latency in the Java class library
Introduction to the low latency in the Java class library
Overview:
In concurrent programming, the queue is an important data structure for data exchange between threads.Low latency queue is an important need for high -performance and real -time applications.The Java class library provides a number of low latency basically concurrent queue frameworks. This article will introduce some of them.
1. disruption:
DISRUPTOR is a high -performance event -driven concurrent queue framework.It is mainly used to achieve high throughput and low -delay systems, such as financial trading systems.DISRUPTOR uses a data structure called Ring Buffer. By providing no lock -up access to multiple producers and multiple consumers, efficient data exchange is achieved.
The following is a sample code for Disruptor:
// Create event class
class Event {
private int data;
public int getData() {
return data;
}
public void setData(int data) {
this.data = data;
}
}
// Create an event processor
class EventHandler implements EventHandler<Event> {
@Override
public void onEvent(Event event, long sequence, boolean endOfBatch) {
// Treatment event logic
}
}
// Create DISRUPTOR instance
int bufferSize = 1024;
Executor executor = Executors.newFixedThreadPool(4);
Disruptor<Event> disruptor = new Disruptor<>(Event::new, bufferSize, executor);
// Register event processor
disruptor.handleEventsWith(new EventHandler());
// Start Disruptor
disruptor.start();
// Release event
EventPublisher publisher = new EventPublisher(disruptor.getRingBuffer());
publisher.publishEvent();
// Stop disruptor
disruptor.shutdown();
2. ConcurrentLinkedQueue：
ConcurrentlinkedQueue is a basic concurrent queue class in the Java class library. It is a non -blocking thread safety queue implementation.ConcurrentlinkedQueue uses a data structure called Lock-free Linked Nodes, which will not block threads during interviews.
The following is a sample code for ConcurrentLINKEDQUEUE:
// Create a concurrent queue
ConcurrentLinkedQueue<String> queue = new ConcurrentLinkedQueue<>();
// Add elements to the queue
queue.add("element1");
queue.add("element2");
// Get and remove elements from the queue
String element = queue.poll();
// Traversing queue
for (String item : queue) {
// Treatment element logic
}
3. LinkedTransferQueue：
LinkedTransferqueue is a basic concurrent queue class in the Java class library. It is an unbounded queue that supports efficient producers-consumer model.LinkedTransferqueue uses a data structure called Lock-free Linked list, which provides low-delayed data exchange in a high concurrency environment.
The following is the example code of LinkedTransferqueue:
// Create a concurrent queue
LinkedTransferQueue<String> queue = new LinkedTransferQueue<>();
// Add elements to the queue
queue.add("element1");
queue.add("element2");
// Get and remove elements from the queue
String element = queue.take();
// Traversing queue
for (String item : queue) {
// Treatment element logic
}
Summarize:
The Java class library provides a variety of low latency basis frameworks, which is suitable for different concurrency needs.DISRUPTOR is a high -performance queue framework that is suitable for real -time applications; ConcurrentLINKEDQUEUE and LinkedTransferqueue are basic concurrent queue class, which is suitable for ordinary high -concurrency scenes.According to specific needs, the selection of the appropriate concurrent queue framework helps improve system performance and response speed.
Note: The above code is only an example. In actual use, it is necessary to make appropriate modification and improvement according to the specific needs.
