File Management of Linux Basic Commands

     BASH Shell manages files=============================================================Create, copy, delete, move, view, edit, compress, findSummary:Linux directory structureFile Location Pathfile managementFirst: Linux directories usually organize files as a single root. /Root directory structure of Linuxls /ivcapp-1:~ # ls ...

Posted by jnuneznyc on Tue, 21 May 2019 02:29:07 +0200

Redis Learning 09 - Multi-database and Server Command

Redis learns 09 multi-database and server commands A Multidatabase Two move library Three Server Command 1 ping 2 echo 3 select 4 quit 5 dbsize 6 info 7 flushdb 8 flushall Redis Learning 09 - Multi-database and Server Command I. Multi-database A Redis instance can contain multiple databases. Each client can specify which d ...

Posted by akano on Mon, 20 May 2019 23:01:10 +0200

Gitlab Settings Database-yellowcong

To be honest, Gitlab's database configuration is quite complex, and there are many configuration files that need to be modified. The main steps are as follows: 1. Creating a database. 2. Add database configuration in / etc/gitlab/gitlab.rb file. 3. Install mysql dependency on gitlab. 4. Execute gitlab-rake gitlab:check to ch ...

Posted by praveenhotha on Sun, 19 May 2019 10:09:28 +0200

DML for (MariaDB/MySQL): Data Update, Delete

Contents of this article:1.update statement2.delete statement 2.1 Form Delete 2.2 Multi-table Deletion3.truncate table 1.update statement update is used to modify records in a table. # Form update syntax: UPDATE [LOW_PRIORITY] [IGNORE] table_reference [PARTITION (partition_list)] SET col1={expr1|DEFAULT} [,col2={expr2|DEFAULT}] ...

Posted by thomashw on Sun, 19 May 2019 09:27:22 +0200

Spring Boot Integrates Spring Batch

Introduction Spring Batch is a framework for handling large amounts of data operations. It is mainly used to read large amounts of data and then output the specified form after certain processing. For example, we can insert batch processing of data in csv files (millions or even tens of millions of data are not a problem) into the database a ...

Posted by TheUkSniper on Sun, 19 May 2019 07:52:16 +0200

Ubuntu Linux System MariaDB10.3 Source Compilation Installation Notes

MySQL and Maria Widenius are real relatives and sisters, named after Michael Widenius, the father of MySQL, who was born to his first wife, My Widenius, and Maria Widenius, the daughter of his current wife.After Oracle acquired Sun, MySQL, previously sold to Sun by Monty, was inherited by Oracle.Oracle is the world's largest co ...

Posted by matthiasone on Sun, 19 May 2019 07:52:21 +0200

Five minutes to quickly understand ActiveMQ, the case is simple and detailed!

Recently, I had a leisure to explore ActiveMQ. ActiveMQ message queue, the container for sending and receiving information, functions as asynchronous message, traffic sharpening, application coupling.There are also Kafka, RabbitMQ, RocketMQ, ZeroMQ and MetaMQ. install Download address: http://activemq.apache.org/co... Double-click / bin/activem ...

Posted by danrah on Sun, 19 May 2019 03:28:10 +0200

Implementation of Sequence in mysql

Recently, we need to migrate the project from DB2 database to MySQL database. Because MySQL has no sequence, we find the sequence implementation of MySQL on the internet, which is basically based on stored procedures and functions. The first and second implementations are seen from the internet, and the third, fourth an ...

Posted by bqheath on Sun, 19 May 2019 00:09:46 +0200

MySQL Multi-Instance Installation

Step 1. Preparations Close the firewall; install MySQL dependent on the libaio library; download, unzip, rename the MySQL executable; and prepare for new user groups and users will not be covered here. The executable directory is/data/mysql57 Instructions to add users and groups groupadd mysql useradd mysql -g mysql Step 2. Add environm ...

Posted by al3x8730 on Fri, 17 May 2019 22:42:58 +0200

Ansible Installation of Linux Multi-Instance mariadb

Ansible installs multi-instance MariaDB 10.2.23 Battlestar Configuration Place mariadb binary packages under root home directory [Mon Apr 29 19:52 root@ansible-centos7 ~]# ls -rw-r--r-- 1 root root 456950538 Apr 26 08:16 mariadb-10.2.23-linux-x86_64.tar.gz Create ansible directory under / data directory and roles folder internally [Mon Apr ...

Posted by Joeker on Fri, 17 May 2019 15:02:28 +0200