SpringBoot practice | using JdbcTemplates to access Mysql
WeChat public number: an excellent wasterIf you have any questions or suggestions, please leave a message in the background. I will try my best to sol...
Navicat tool and pymysql module of mysql
1. Introduction to ide tools (Navicat) In order to facilitate the test, use the IDE tool, Navicat, which is essentially a socket client, a visual tool...
Character set scrambling in mysql
#View the character set of mysql database mysql> show variables like "%character%"; +--------------------------+------------------------...
Support jsp+html jump in the whole contract of springboot 2.0
Spring boot project creation tutorial https://blog.csdn.net/q18771811872/article/details/88126835 springboot2.0 jump to html tutorial https://blog.csd...
The implementation of registration function in Java Web
Implementation of registration function Experimental steps 1. Create the database mydb with the character code of utf-8. 2. Create a tb_user table in...
Deployment and monitoring of MYSQL 5.6 replication from the library
Deployment and monitoring of MYSQL 5.6 replication from the library MYSQL 5.6 installation and deployment #1. Download the installation package wget h...
PHP+Redis can delay tasks and automatically cancel and complete orders
Simple timing task solution: use redis's keyspace notifications (notify events after key failure); (A) business scenario: 1. When a business is t...
[tutorial] Java MySQL connection
Reprinted from http://www.runoob.com/java/java-mysql-connect.html In this chapter, we will show you how to use JDBC to connect to MySQL database. A d...
The stored procedure for generating time dimension in mysql (stored procedure example)
This paper mainly records the problem of generating time dimension in the process of BI and data analysis. It is also a basic example of mysql stored ...
Python automatic operation and maintenance development: basic Mysql Database Paging and paging in Python code
Back end database paging is implemented according to limit The first writing method: limit the number of pages offset start position select id,name,s...
Troubleshooting of Oracle with high resource consumption but execution = 0
During the daily inspection of a customer's production environment database, it was found that the AWR report had a high resource consumption but...
Project deployment of seed search website based on python
This lecture will explain the deployment process of seed search website in detail. Website presentation: https://bt.mypython.me Source address: https:...
Django's own background management configuration
Configuration of Django's own background management Create projects and apps Modify profile Database configuration DATABASES = { 'default�...
Appearance mode of design mode (structural type)
[TOC] I. model definition Appearance mode: appearance mode is to provide a unified interface to access a group of interfaces of subsystem. The facade...
Interpretation of PostgreSQL source code (108) - background process (PGPROC data structure)
PostgreSQL uses the process mode. For each client, it will Fork a background process to respond to the client's request. This section describes ...
Some problems in Ubuntu 18.04 PostgreSQL 11 apt default installation
First, install the software by default (this article takes PostgreSQL 11.1 as an example, and other versions are similar). sudo apt install postgresql...
PostgreSQL remote link server configuration
PostgreSQL server needs to be configured to be remotely linked by users Profile:pg_hba.conf controls access security and manages the access rights of ...
Shell develops MySQL master-slave monitoring script
Monitor whether the master-slave synchronization of MySQL is abnormal. If not, send SMS or email to the administrator. 1) develop a daemons script to...
Three data table de duplication methods of MSSQL SQL Server
Abstract: Three different data De duplication methods will be shared belowData De duplication: it needs to be defined according to a certain field. Wh...
Mysql- high availability cluster [master-slave single mode -binlog]
Operation process: Install mysql service respectively in master and slave nodes Set common mysql configurations in master and slave nodes1. Add admin...
Node connects MySQL and encapsulates its addition, deletion, query and modification
Node connects to mysql In this note, the connection between node and mysql will be introduced, and the encapsulated code will be shared, which can be ...
The same and different points of SELECT and SET assignment in SQL SERVER
SELECT and SET can be used to assign values to variables in SQL SERVER, but their usage and effect are different in some details. 1. In terms of varia...
zabbix monitoring mysql survival and performance
The Zabbix environment has been deployed:Zabbix_aget: installed in / etc/zabbix1. Open port 10050 firewall-cmd --zone=public --add-port=10050/tcp --p...
reverse string
We have a string, such as: DECLARE @Source VARCHAR(MAX)= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' Now I want to reverse it: ZYXWVUTSRQPONMLKJIHGFEDCBA A...
Mybaits Source Parsing - The most detailed network, none: ResultSet automatically maps to entity class objects (last)
In the previous article, we sent SQL to the database and returned a ResultSet. Next, we automatically mapped the ResultSet to an entity class object.T...
Hints for You have new mail in/var/spool/mail/root on Linux
1. Sometimes we operate under the root user and often prompt you after login: You have new mail in/var/spool/mail/root. This prompt is due to reminde...
Python operation SQLite/MySQL/LMDB
1. overview 1.1 Preface Recently, when storing font image sets, you need to learn LMDB, take this opportunity to review the use of SQLite and MySQL, a...
After using Python to climb data and FineBI for analysis, I found that Taobao's mobile phone was so cheap
Recently, I want to start a new mobile phone. Considering that domestic mobile phones are different now and in the past, both the sales volume and the...
Distributed tracking system microservice monitoring based on SkyWalking
In the last article, we built a SkyWalking based distributed tracking environment. Today, we talk about using SkyWalking to monitor our microservices ...
[springboot development monomer web shop] 3. User registration implementation
Catalog User registration ##Create database ##Generate UserMapper ##Write business logic ##Write user service Userserviceimpl? Finduserbyusername des...