wget https://bintray.com/rabbitmq-erlang/rpm/download_file?file_path=erlang%2F21%2Fel%2F7%2Fx86_64%2Ferlang-21.3.8.6-1.el7.x86_64.rpm mv download_file?file_path=erlang%2F21%2Fel%2F7%2Fx86_64%2
Author: Simo
ZK small knot
One ZooKeeper function 1. File system
2. Notification mechanism
Each sub-directory item is called a znode. Like the file system, we can add and delete znodes freely. Add or delete sub-z
Springboot Series: Spring Boot Integrated Spring Cache
SVN error: [Previous Operation Has NOT Finished; Run ‘Cleanup’ IF IT WAS Interrupted]
Today, when a dozen or so class files were submitted in batches, during the code submission process to the SVN server, the computer suddenly got stuck and there was no response, so I decided to shu
ZooKeeper implements distributed lock safety
Background ConnectionLoss link is lost SessionExpired session expired Bypass zookeeper broker for status notification leader election Disconnect from zkNode Do idempotent Static expansion, dynamic
CentOS6.5 Installing Lamp
Centos install LAMP
System: Centos 6.5
Apache 2.4 + PHP 7.2 + Mysql 5.7
check centos version How to Check CentOS Version
cat /etc/redhat-release
cat /etc/ centos-release
cat /etc
Do you know the Spring things control feature?
1. Transaction characteristics
Atomicity: Emphasizes the indivisibility of transactions
Consistency: Emphasizes that the integrity of the data must be consistent before and after the execution of t
CentOS6 and CentOS7 boot automatic start service method
Centos6 and Centos7 start up service automatically < div class="content-detail unsafe markdown-body" data-spm-anchor-id="a2c4e.11153940.0.i7.388d3030RAXT2V"> Let’s talk about the easy way to sta
Consistent Hachi Distribution
hash_ring
#- *- coding: utf-8 -*-
“”” hash_ring
~~~~~~~~~~~~~
Implements consistent hashing that can be used when
the number of server nodes can increase or decrease (like in memcached) .
CentOS 8 installation
So far, the latest version of CentOS is CentOS 8. Next, I will introduce the installation process of CentOS Linux 8.0.1905
1. Install CentOS 8
Success The boot system will display the i