Based on the case of custom RPC based on Netty, it is reformed. Implementation of registration and discovery mechanism of simple version service based on Zookeeper
1, Transformation requirements: 1. Programming 1: Start two servers to register IP and port information to Zookeeper automatically;When the client starts, it gets all the node information of the service provider from Zookeeper, and the client establishes a connection with each server;When a serUTF-8...
Posted by Whyme on Sun, 16 May 2021 07:24:56 +0930
Hadoop cluster configuration Secret-free login and cluster configuration
Write at the beginning: Is it difficult for De Xuan not to talk to a bosom friend, to talk to a bosom friend, or to waste his tongue on bosom friends? Next time, we finished configuring the basic environment in our previous article. This is just as important as secret-free login, and of course,UTF-8...
Posted by timj on Fri, 21 May 2021 05:59:58 +0930
Detailed explanation of the principle of zk doing distributed lock
zk does distributed locking Process-based locks fail in distributed scenarios No Lock First, let's simulate a simple inventory deduction scenario to step by step verify how process-based locks fail in distributed scenarios. First we create a simple inventory table and initialize a piece of dataUTF-8...
Posted by prozad on Wed, 26 May 2021 07:49:45 +0930
Architecture Learning Note 33-Zookeeper Core Concepts (Znode, Stat, Watcher, ACL, ZkClient, Curator, Distributed Configuration Center, Distributed Lock, Distributed Service Registration Subscription)
Zookeeper core concepts What is Zookeeper? Simply put, Zookeeper is just like Mysql or Redis, which is a service for storing data. What is the feature of Zookeeper? Zookeeper is a typical distributed data consistency solution based on which distributed applications can implement functions such UTF-8...
Posted by jfontein on Mon, 21 Jun 2021 03:15:45 +0930
Analysis and application of Zookeeper principle
catalogue 1. Introduction to zookeeper 2. zookeeper permission control 3. zookeeper listener event (Watcher) take curator client as an example 1. Introduction to zookeeper zookeeper is an open source distributed coordination service of Google. Its data structure is similar to the file system stUTF-8...
Posted by jahred on Tue, 13 Jul 2021 03:51:00 +0930
Zookeeper and its distributed lock
Zookeeper and its distributed lock 1, Detailed explanation of ZooKeeper data model znode structure In zookeeper, it can be said that all the data stored in zookeeper is composed of znode. Nodes are also called znode and store data in the form of key/value. The whole structure is similar to thatUTF-8...
Posted by KFC on Sun, 18 Jul 2021 03:05:53 +0930
Zookeeper operation practice based on cursor
preface Zookeeper operation mode This article mainly talks about using java to operate zookeeper, just like operating mysql database. It mainly realizes the functions of adding, deleting, modifying and querying, and there are three main ways to realize these functions: The native api officiallyUTF-8...
Posted by tomcurcuruto on Sat, 31 Jul 2021 05:05:24 +0930
zookeeper leader election
Theoretical knowledge objective The main purpose of leader election is to select a node from many nodes as the leader Important concepts myid myid is used to uniquely identify a node in the cluster. In the configuration file, the id is allocated in the following way server.1=localhost:2888:3888UTF-8...
Posted by Sh0t on Wed, 08 Dec 2021 07:34:57 +1030
Dubbo source code analysis - Dubbo protocol analysis
preface: Dubbo provides a variety of protocols for interaction between service consumers and providers. From the Dubbo framework level (Reference: https://dubbo.apache.org/zh/docsv2.7/dev/design/ ), the Dubbo agreement is located at: How to understand these agreements? I think it can be understUTF-8...
Posted by nishanthc12 on Wed, 08 Dec 2021 11:40:46 +1030
zookeeper role initialization
Role initialization zookeeper has the following three roles: LeaderFollowerObserver In the run method of QuorumPeer, different operations will be performed according to the state of the current node // QuorumPeer public void run() { // ellipsis try { /* * Main loop */ while (running) { switch (UTF-8...
Posted by sonicfusion on Wed, 08 Dec 2021 15:59:51 +1030