Programmer Group

Preface JPA was introduced to simplify the development of persistence layers and integrate ORM technology, ending the situation where ORM frameworks such as Hibernate, TopLink, JDO and so on operate independently.JPA is developed on the basis of the existing ORM framework and is easy to use and highly scalable.Overall, JPA includes the fol ...

1. redis: ``` docker pull redis docker run --name jeecg-boot-redis -p 6379:6379 -d redis ``` Create a redis container named jeecg boot redis with port number 6379 2. mysql: docker pull mysql:5.7.28 docker run -p 3306:3306 --name jeecg-boot-mysql -e MYSQL_ROOT_PASSWORD=root -d mysql:5.7.28 --lower_case_table_names=1 Create a redis con ...

1, Preparatory work CentOS 7.4 system server needs to be configured with yum source, firewall is closed, clock service of each node is synchronized, and each node can communicate with each other through host name. All machines turn off the firewall and selinux setenforing 0 (Modify profile (close) sed -i 's/SELINUX=enforcing/SELINUX=disab ...

Implement Paging 1> Business logic for paging implementation 1->N data are displayed on each page. For the total number of data records M, the number of pages M%N==0?M/N:M/N+1; 2->Page Rendering Paging html Part 3>Switch pages, input parameters, background processing, and retrieve new eligible data 4>Paging method, js paging, and ...

1. Background Because the business of the project is constantly moving forward, it is unavoidable that the number of tables in the database will become larger and larger, constantly squeezing hard disk space.Business growth cannot be sustained even with the greatest amount of space, so it is necessary to regularly delete unnecessary data.A tab ...

Docker is a lightweight virtualization technology, and lnmp is a powerful, open-source web running environment, so here's a demonstration of using Docker to build an lnmp image. PS: To maintain lightweight and scalable performance, Docker encourages us to "one process per person"Container"means don't integrate too many functions ...

Docker is a lightweight virtualization technology, and lnmp is a powerful, open-source web running environment, so here's a demonstration of using Docker to build an lnmp image. PS: To maintain lightweight and scalable performance, Docker encourages us to "one process per person"Container"means don't integrate too many functions ...

Installation instructions: A mysql program file, a configuration file, running multiple mysql instances (each with its own distinct data directory).For the convenience of the test, only two examples are used in this experiment. MySQL program installation directory: /usr/local/mysql_5.6.38 Data directories for MySQL i ...

Installation instructions: A mysql program file, a configuration file, running multiple mysql instances (each with its own distinct data directory).For the convenience of the test, only two examples are used in this experiment. MySQL program installation directory: /usr/local/mysql_5.6.38 Data directories for MySQL i ...

1. Scenarios for use In general, there are test environments and formal environments for our development.Of course, databases are also separate.If you could use phpmyadmin to directly access mysql on both servers.This is the need. 2. Solutions 1. Find under the phpmyadmin folderConfig.sample.inc.php, renamedConfig.inc.php. 2. OpenConfig. ...