Programmer Group

/** * TODO: * @package: com.zzhijian.zookeeperdemo.zk * @date: 2019-08-15 10:57 **/ @Slf4j public class ZookeeperDemo { private static String ZK_ADDRESS = "zkServer:2181,zkServer:2182,zkServer:2183"; public static void main(String[] args) { try { ZooKeeper zooKeeper = ge ...

I. Environmental Description1. Server information 172.21.184.43 kafka,zk 172.21.184.44 kafka,zk 172.21.184.45 kafka,zk 172.21.244.7 ansible 2. Software Version Information System: CentOS Linux release 7.5.1804 (Core) kafka: kafka_2.11-2.2.0 Zookeeper version: 3.4.8 ansible: ansible 2.7.10 II. Configuration preparation1. Write playbook-relate ...

Preface In ZooKeeper Actual-Distributed Queue, we wrote about how to implement a distributed queue through ZooKeeper's persistent sequential nodes. In this article, we will write a distributed lock implemented by ZooKeeper. Design Refer to the concurrent programming of JUC-locks-ReentrantLock, which was learned before, to implement the jav ...

This paper mainly includes two parts. The first part mainly includes four installation methods of HBase, which are: (1) stand-alone mode, (2) pseudo-cluster mode, (3) using zookeeper which comes with HBase to build distributed cluster, and (4) using zookeeper which is installed independently to build distributed cluster. The second part shows t ...

Preface On February 16, 2018, Apache Dubbo joined the Apache Foundation incubator. On May 16, 2019, the board of directors of the Apache Software Foundation approved the graduation application of Apache Dubbo, which means that Apache Dubbo has officially become Apache's top project. To configure When Dubbo donates sperm to Apache, it means tha ...

1. Overview This article shares the elegant downtime of Dubbo, corresponding to Dubbo User Guide Elegant Downtime . Define as follows: Dubbo accomplishes elegant downtime through JDK's HutdownHook, so if a user uses a mandatory shutdown comm ...

The last one implements service registration discovery and basic string communication functions. This one implements the functions that we usually invoke using classes of RPC framework. Implementing consumer end to call remote services through inte ...

1. Description The core concept of gateway is routing configuration and routing rules. As the entrance of all requests traffic, dynamic routing is necessary to avoid rebooting in the real production environment in order to ensure high reliability and high availability. This paper mainly introduces the idea of implementation and uses Nacos as th ...

Earlier, when I started the Spring Cloud Basic tutorial, I wrote this article: Basic Framework Selection for Micro Services Architecture: Spring Cloud or Dubbo?" And may have been seen by many readers.Since then, there has been a question about how to choose these two frameworks. In fact, I have clearly mentioned in this paper that the com ...

Articles Catalogue I. Introduction From ACID to CAP/BASE 3. Distributed Consistency Protocol 1.2PC and 3PC 2PC Initiate transaction requests Transaction commit/rollback 3PC canCommit preCommit doCommit 2. Paxos 3. ZAB protocol IV. A Prelim ...