The original understanding of the jeromq framework in the Java library

Jeromq (also known as ZMQ-Java) is one of the multi-language implementation based on the zeromq message transmission library. It provides a solution for high-performance and asynchronous message transmission.This article will introduce the technical principles of the Jeromq framework in the Java library to discuss in detail its main characteristics and how to use Jeromq in Java. 1. Introduction to Zeromq: Zeromq is a reliable, efficient, scalable message transmission library that provides asynchronous, message -based communication mode.ZEROMQ supports a variety of transmission protocols (such as TCP, PGM, IPC, etc.), and provides an easy -to -use API (application interface) to ensure the reliability and efficiency of message transmission. 2. Jeromq advantage: -The cross -platform: Jeromq is a Zeromq version implemented by Java, which can be used across platforms. -The high performance: Jeromq provides efficient message transmission performance by using the underlying mechanism of Zeromq. -D asynchronous communication: Jeromq supports asynchronous communication mode, which can handle multiple message requests at the same time to improve the concurrency performance of the system. 3. The core principle of Jeromq: Jeromq is implemented based on the low -level socket API of Zeromq. It uses the Java multi -threaded mechanism to provide event circulation and manage the network connection.It uses asynchronous I/O and event -driven way to handle message transmission to achieve various functions of the Zeromq message mode. 4. Example of Jeromq: Below is a simple example code that demonstrates how to use Jeromq for messages and subscriptions in the Java program: Subscriper: import org.zeromq.ZMQ; public class JeroMQExample { public static void main(String[] args) { // Create context and connection with socket ZMQ.Context context = ZMQ.context(1); ZMQ.Socket publisher = context.socket(ZMQ.PUB); ZMQ.Socket subscriber = context.socket(ZMQ.SUB); try { // Binding Publisher Socket publisher.bind("tcp://localhost:5555"); // Connect the subscriber socket subscriber.connect("tcp://localhost:5555"); subscriber.subscribe(ZMQ.SUBSCRIPTION_ALL); // make an announcement String message = "Hello, JeroMQ!"; publisher.send(message.getBytes()); System.out.println("Published message: " + message); // Receive messages byte[] receivedMessageBytes = subscriber.recv(); String receivedMessage = new String(receivedMessageBytes); System.out.println("Received message: " + receivedMessage); } finally { // Close the socket connection and context publisher.close(); subscriber.close(); context.term(); } } } In the above example code, we created a publisher Socket and a subscriber Socket, and binded and connected to a specific address, respectively.The publisher sends a message, and the subscriber receives and prints the news. Summarize: The Jeromq framework implements the function of Zeromq in the Java library and provides high -performance, asynchronous message transmission solutions.By using Jeromq, we can easily implement the message transmission function in Java applications and improve the concurrent performance of the system.I hope this article will help you understand Jeromq's technical principles.