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Centos 7 yum install LAMP Author: Yan Tao E-mail: coderyantao@qq.com Note: the experimental environment is virtual machine, selinux and firewalld have been shut down Official Apache 2.4 documentation https://httpd.apache.org/docs/2.4/ #View port [root@localhost ~]# firewall-cmd --query-port=80/tcp no ...

The Python ConfigParser tutorial shows you how to use ConfigParser to use configuration files in Python. Article catalog 1 Introduction 1.1 Python ConfigParser reading files 1.2 sections in Python configparser 1.3 Python ConfigParser reading data from strings 1.4 Python ConfigParser reading data fro ...

This paper implements a simple springboot+mysql application (ip count based on user access and stored in mysql database), builds a docker image for the application, implements the deployment of docker container and the docking with mysql container Docker installation You can install docker desktop f ...

Sometimes we need to save a lot of data, which is time-sensitive, such as some logs. After a period of time, the existence of these data is not significant, and in addition to taking up a lot of hard disk space, it may make data queries slow.This data needs to be cleaned up regularly.We can cope with ...

Adding fields to a table of ten million or more levels in MySQL has always been a headache. In this case, how to deal with it? This paper uses three common scenarios to illustrate the case. 1. Environmental preparation Database version: 5.7.25-28 (Percona branch) Server configuration: three centos 7 virtual machines with 2CPU 2G memory Database ...

Introduction of master and slave What is master-slave? MySQL master-slave replication is one of its most important functions. Master-slave replication refers to that one server acts as the master database server and another or more servers act as the slave database server, and the data in the master ...

SELECT pf1001.attrId, attrCode, attrName, (case pf1001.scopeType when '04' THEN CONCAT('product-',(select productName from pf1003 where productId= pf1001.scopeId)) WHEN '03' THEN CONCAT('Product line-',(select productLineName from pf1004 where productLineId= pf1001.scopeId)) WHEN '02' THEN CONCAT( ...

Hunt Framework is a full stack Web framework developed in D language, similar to Laravel / SpringBoot / Django, etc., which enables D language developers to create projects quickly. The built-in super multi business specifications are convenient for developers to use out of the box, and convenient for managers to review project code more easily ...

Finish MySQL in half a day (all) Finish MySQL (all) 1 in half a day The blogger uses MySQL version 8.0, and the storage engine is InnoDB. We don't explain InnoDB in detail here. If necessary, we recommend you to know This article Blog (or Baidu) https://www.jianshu.com/p/519fd7747137 3A. Add, delete, ...

Recently, the task is relatively light, and I have free time to learn learning technology, so I come to study how to realize the separation of reading and writing. Here we use blog to record the process. On the one hand, it can be viewed in the future, and on the other hand, it can also be shared with you (most of the information on the Interne ...