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SpringBoot-21-Mybatis multiple data sources As we mentioned earlier, there are two ways to generate Mybatis Code: Mybatis Genenrator Mybatis code generation Mybtais Plus MyBatisPlus code generation The JdbcTemplate and spring boot data operation databases were also introduced earlier JdbcTemplate multi data source configuration Spring ...

Environmental preparationDatabase version: MySQL 5.7.20-logCreate table SQLDROP TABLE IF EXISTS `t_ware_sale_statistics`; CREATE TABLE `t_ware_sale_statistics` (   `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'Primary key id',   `business_id` bigint(20) NOT NULL COMMENT 'Business organization code',   `ware_inside_code` bigint(20) NOT NULL C ...

Backup (mysqldump) Realize the following functions: 1. Back up the specified database 2. Delete the backup file before the specified number of days. 1 day is set by default Script example (mysql_bak.sh) # Database backup root directory BACKUP_DIR="/usr/local/mysqlbackups/tsmbak/" #Specify the host name of the host where mysql resides DB_HOST ...

(3) Probability and information theory) 2, Linear algebra Purpose: it is mainly to reduce the dimension of data and restore or build the target with the least data 2.1 eigenvalue decomposition Only symmetric positive definite matrix can be decomposed into eigenvalues. Eigenvalue decomposition: A = P * B * PT, where B is the diagonal mat ...

Element UI simple learning + add, delete, modify and check based on springboot Sample demonstration Springngbooy + Vue realizes simple addition, deletion, modification and query (simple separation of front and rear ends) How to launch our vue ui Our element ui created here is designed We are graphical ui (graphical interface) ...

Grabit yes Salmon data kinship analyzer It collects SQL scripts from various data sources and then uploads them to salmon for data kinship analysis. The analysis results can be viewed in salmon. At the same time, the data kinship results will be extracted into the local directory. At present, grab supports two modes of operation: graphical int ...

https://www.jianshu.com/p/a2bd89e0d24b If you want to do well, you must sharpen your tools first. Let's install relevant tools first jmeter I demonstrated it on mac, so I'll install brew first ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" 2> /dev/null Using brew to install jmeter brew instal ...

The main purpose of writing this blog is to record the following knowledge points, and then introduce its concept and usage one by one. 1. Recognize and use vscode 2. Use g + + to compile and run a multi file C + + project 3. Compile a multi file C + + project with cmake 4. Compile, run / debug a multi file C + + project on cscode 5. Use gdb to ...

The community property management system is divided into two roles: community owner and community property manager. After logging in to the system, the community owner can complain, maintain and report, view bills, log in and register, etc; After logging into the system, the administrator can manage users, and can manage parking spaces, houses, ...

1, Overview of MySQL MMM cluster technology; Overview: MMM (Master Master replication manager for mysql) is a script program that supports dual master failover and dual master daily management. MMM is developed in Perl language and is mainly used to monitor and manage mysql master master replication. It can be said to be mysql master replicati ...