Programmer Group

This article is just a note. scene Observation of CPU usage of processes Observe CPU usage of functions in the process: sudo perf top -p <pid> Display function call chain at the same time: sudo perf top -g -p <pid> Sampling results are recorded for subsequent analysis, and - g records the call chain: sudo perf record -g -p <pid&g ...

AbbitMQ Cluster Setup Job Based on Docker 1. Goals Set up a RabbitMQ cluster with three nodes 2. Preparations 2.1 Operating System ubuntu-18.04-desktop-amd64 (Official iso download) Set the software source of ubuntu as a mirror of Ali to improve download speed.See https://opsx.alibaba.com/mirror Beginners recommend GUI configuration: System ...

This is an article from Ali's internal technical forum, the original text has been well received in Ali.The author has opened this article to the cloud community for outside access.Hollis has partially deleted the content of the article, mainly deleting the introduction of tools that can only be used inside Ali, and deleting so ...

background Container technology, represented by Docker and Rocket, is becoming more and more popular. It changes the way companies and users create, publish and run distributed applications. It will bring its due value to the cloud computing industry in the next five years. Its attraction lies in: 1) Resource independence and ...

Preface It took two and a half days to compile a chrmomium project under linux. There are some additional operations that are not available on official documents. No matter which platform version of the chromium project is compiled, there is a strong feeling that their development machine is too slag:) test Official docume ...

This paper is based on entos 7 installation configuration Nginx operation practice record collation. Configuration of EPEL Sources sudo yum install -y epel-release sudo yum -y update II. Installation of Nginx sudo yum install -y nginx After successful installation, the default website directory is: / usr/share/nginx/html The default configurat ...

aiblog3.jpg This time, we will talk about simple index and matrix traversal. Attached herewith Video link If you want to know more about it, you can have a look. Introduction of numpy third party Library First, we introduce numpy as a third-party library. If a classmate does not install numpy, he can install it from the com ...

introduce systemd System and Users position /usr/lib/systemd/system /usr/lib/systemd/user unit The basic unit of system management, called unit, is divided into the following types Service unit: System services Target unit: A group of units Device Unit: Hardware Device Mount Unit: Mount Point of File System Automount Unit: Au ...

Redis Learning Notes (1) Redis is an open source, high performance, key-value-pair-based caching and storage system. Redis is the abbreviation of REmote DIctionary Server. 1. Download and install wget http://download.redis.io/redis-stable.tar.gz//download, copy to/usr/local tar -xzvf redis-stable.tar.gz //decompression cd redis-stable / ...

wcj     github Warehouse Source Download This is not only a tutorial, but also a tool to output my resume from the command line, O() O() O() O() O), which is very interesting. # Global Installation, Installation Errors Need to be preceded by sudo $ sudo npm install -g wcj # Output help $ wcj -h Usage: wcj Here is my personal ...