Programmer Think

There is a heartbeat detection mechanism in Netty. When the client does not read or write for a certain period of time, the server can detect it and prompt IdleStateHandler is the processor that netty processes idle state The specific implementation steps are as follows: 1. Reader idletime: indicate ...

1. Preface What is the difference between websocket and socket.io? websocket A technology for two-way real-time communication between client and server While mainstream browsers already support it, there may be incompatibilities when using it Suitable for client and node-based server use socket.io Encapsulate WebSocket, AJAX, and other comm ...

Introduction to Netty 1, Composition** 1.Bootstrap Netty applications set the start of the bootstrap class, which provides a container for application network configuration 2.Channel The underlying network transmission API must provide interfaces for I/O operations, such as read, write, connection, ...

netty start process Start instance: public final class EchoServer { static final boolean SSL = System.getProperty("ssl") != null; static final int PORT = Integer.parseInt(System.getProperty("port", "8007")); public static void main(String[] args) throws Exception { // Configure ...

order This paper focuses on the masterelement of chronos MasterElection DDMQ/carrera-chronos/src/main/java/com/xiaojukeji/chronos/ha/MasterElection.java public class MasterElection { private static final Logger SWITCH_LOGGER = LogUtils.SWITCH_LOGGER; private static volatile ServerState state = ServerState.BACKUPING; public static ...

Recently, after studying netty and reading the blog for a few days, I plan to write a hands-on program by myself. This program is very simple: the client sends a ping, and the server will reply a pong accordingly. When the server loses the connection, it will be disconnected. The whole code is divided into two parts: client and server. The stru ...

In the previous section, when explaining the RegistryDirectory, the dubbo administrator can modify the parameters of dubbo service provider online through the dubbo admin management system, and finally store them in the configurators catalog of the registry, and then notify the RegistryDirectory to update the relevant attributes in the URL of t ...

Dubbo Network Call background We know that the general flow of Dubbo remote calls (consumer processes) is as follows: Get a list of invoker s for this method from Dirctory A list of invoker s that meet the criteria is obtained by filtering router routes invoker called with Cluster fault tolerance Final invoker filtered by loadBalance filter ch ...

TCP is a protocol based on streaming. Request data is not bounded in its transmission, so when we read a request, we may not get a complete packet.If a packet is large, it may be sliced into multiple packets for multiple transmissions.At the same time, if there are multiple small packages, they may be integrated into one large package for tran ...

Netty is just a simple understanding. Please correct any mistakes. Why do you have a heartbeat If a connection is not used for a long time, it will be closed to reduce the connection pressure of the server. Because the server needs to keep the connection information of the client, the client is likely to have various conditions, such as for ...