Programmer Group

Manually install MySQL version 5.7. X in CentOS 7.4 environment. 1. Install MySQL version: 5.7.25 2. Download address https://dev.mysql.com/downloads/mysql/5.7.html#downloads (as time goes by, please refer to the download address of the latest official website) 3. Use the wget command to download the relevant rpm files through breakpoint t ...

Take qq mailbox as an example To realize the mail function on the network, there must be a special mail server The mail server is similar to the real post office. It is mainly responsible for receiving the mail delivered by the user and delivering the mail to the e-mail of the mail recipient. 1. Zhang San connects to the SMTP server thr ...

Basic knowledge learning 🌟 The difference between topic and service -topic of conversationserviceSynchronizationasynchronoussynchronizationcommunication model Publish / subscribeServer / clientUnderlying protocolROSTCP/ROSUDPROSTCP/ROSUDPfeedback mechanismnothinghavebufferhavenothingReal timeweakstrongNode relationshipMany to manyOne to ...

Spring Security has enabled CSRF defense by default. What is CSRF CSRF is a browser cross site forged request. Hackers can induce users to perform some unexpected behaviors, which allows attackers to partially bypass the homologous strategy. For example, after the user logs in to system A, the user can modify his mailbox, and then the browse ...

@[TOC] nodeJS express creates a server and operates the mysql database (personal study notes) 1, Initialization 1. Create project 1.1 create folders and initialize package management files npm init -y 1.2 installing express npm i express@4.17.1 1.3 create the app.js file in the root directory file as the entry file of the whole project ...

[VMware vSAN 7.0] 4.2.3 use ESXCLI to unmark flash devices used as capacity devices - we have hardware and software solutions IT dry goods 2021-03-25 09:58:50 84 Category column: 1. Server virtualization cluster scheme ...

introduction In the enterprise information application environment, the security and response speed of the server need to configure the response parameters according to the actual situation to achieve the optimal user experience. The default Nginx installation parameters can only provide the most basic services, and also need to reconcile ...

Encapsulation of Linux 'C/C + + shared memory with message queue + semaphore 1, Train of thought The server demo I do is divided into two servers: the front server and the rear server. The front server is used to receive information, contract and unpack, while the rear server is used to process the package business. The front and rear process ...

introduce The Linux kernel was originally written by Finnish Linus Torvalds as a hobby when he was studying at the University of Helsinki. Linux is a UNIX like operating system that is free to use and spread. It is a multi-user, multi task, multi thread and multi CPU operating system based on POSIX and UNIX. Linux can run the main UNIX tools, ...

1, Get to know EasyExcel 1.1,Apache POI Apache POI is an open source function library of the Apache Software Foundation, which provides cross platform Java API s to read and write files in Microsoft Office format. However, there are some problems as follows: high learning cost, large memory consumption of POI, redundant and complicated code w ...