Category: Opensource

Open-source software (open-source) is a new term that is defined as software whose source code can be used by the public, and the use, modification, and distribution of this software are not restricted by licenses. Open source software is usually copyrighted, and its license may contain such restrictions: deliberate protection of its open source status, notice of authorship, or development control. “Open source” is being registered as a certification mark by public interest software organizations, which is also a means of creating a formal definition of open source.

Do you know the change of Spring from Spring3 to Spring5?

Foreword:

**With the development of Internet technology, Spring is also constantly evolving, from the earliest lightweight Supp

October 14, 2021By Simo Spring change, spring, Spring3, Spring5, understandLeave a Comment

Zookeeper Cluster Environment Construction (Pure Zookeeper)

1. First put the zookeeper decompression package on the three machines and decompress it.

Then zookeeper depends on jdk Yes, then you should also install jdk, which will not be explained in d

October 14, 2021By Simo ZooKeeper cluster, construction, environment, pure, ZookeeperLeave a Comment

Stability detection of consistency hash algorithm and its problems and solvement strategies

Join a machine node:

assumes p2p network To add a new machine node N(new), then N(new) must first establish a connection with the N(x) node in the p2p network, and use N(x) to find the corres

October 14, 2021By Simo ZooKeeper Algorithm, Consistency, existence, Hash, problem, Resolution, stability, Strategy, TestingLeave a Comment

Simple operation of ZooKeeper

There is a data model inside zookeeper, which is a hierarchical namespace; the namespace is similar to an ordinary file system, which is mainly used to store configuration information; the namespac

October 14, 2021By Simo ZooKeeper operation, simple, ZookeeperLeave a Comment

Consistency hash algorithm implementation (pseudo code)

Refer to this blog for the principle of consistent Hash algorithm, and the introduction is more detailed: https://www.cnblogs.com/lpfuture/p/5796398.html

Preset scene: all requests Then, acco

October 14, 2021By Simo ZooKeeper Algorithm, code, Consistency, Hash, Implementation, PseudoLeave a Comment

Spring loop dependence

1. Background

Add an asynchronous processing function (@asyc) to the sorting service. During local testing, it was found that the service was sometimes normal and sometimes abnormal after sta

October 14, 2021By Simo Spring cycle, deep, dependence, problem, springLeave a Comment

ZooKeeper Interview Summary

1: What is Zookeeper?

Answer: ZooKeeper is an open source distributed coordination service. It is the manager of the cluster and monitors the feedback information of the cluster nodes for the

October 14, 2021By Simo ZooKeeper interview, Summary, ZookeeperLeave a Comment

[[emailprotected] zookeeper]# pwd
/root

October 14, 2021By Simo ZooKeeper installation, mode, stand-alone, use, ZookeeperLeave a Comment