[Linux Services] vsftpd File Transfer Protocol

vsftpd file transfer protocol System environment: CentOS Linux release 7.6.1810 (Core) I. Brief Introduction ftp (File Transfer Protocol) is called Very Secure FTP Server. Vsftpd is the ftp server software running on linux operating system. - vsftp provides three login modes: 1. anonymous login; 2. local user login; 3. virtual user login T ...

Posted on Wed, 09 Oct 2019 17:11:35 -0700 by c_shelswell

Spring-based declarative transactions using annotations (database operations, servlet implementations)

Implementing declarative transactions with annotations (database operations, servlet implementations) 1. Transactions: Let's see how transactions in databases are defined. That is to say, in a transaction, if many methods are invoked, either all of them are successfully executed or all of them fail to e ...

Posted on Wed, 09 Oct 2019 13:44:55 -0700 by nishmgopla

Detail mycat+haproxy+keepalived to build high availability load balancing mysql Cluster

Summary Nowadays, clustering is widely used to optimize database performance, while oracle cluster is expensive to invest in software and hardware. mysql is more recommended to use mycat to build database cluster. Here is how to use mycat+haproxy+keepalived to build a high available load balancing system belonging to mysql database. Main id ...

Posted on Wed, 09 Oct 2019 11:31:24 -0700 by smarty_pockets

Byte stream and character stream in java i/o system

How to read the file content? Through File objects, we can read the attribute information of files or folders. If we need to read the content data of files, then we need to use IO stream technology.Read and write files through streams Stream refers to a series of flowing characters. It is a first-in, fi ...

Posted on Wed, 09 Oct 2019 08:27:57 -0700 by lobo235

docker mysql container mount using-data file_configuration file

mysql container use-data file_configuration file mount Download mirroring [root@silence ~]# docker pull docker.io/mysql:5.6 [root@silence ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/mysql 5.6 95e0fc47b096 11 days ago 257 MB docker.io/mysql ...

Posted on Wed, 09 Oct 2019 05:44:00 -0700 by bloodl

Binary package installation MySQL database

1.1 Binary Pack Installation of MySQL Database 1.1.1 Pre-installation preparation (specification) 1 [root@Mysql_server ~]# mkdir -p /home/zhurui/tools ##Create the specified toolkit storage path 2 [root@Mysql_server ~]# wget http://Ftp.ntu.edu.tw/pub/MySQL/Downloads/MySQL-5.5/mysql-5.5.32-linux 2.6- ...

Posted on Wed, 09 Oct 2019 05:11:46 -0700 by richrock

Common operation of layui table rendering

1. The data returned to the front desk during table rendering is a list set, which stores object A, and object A has an attribute of object B, so the following method should be used when table rendering. layui.use(['form', 'element', 'util', 'carousel', 'form', 'laypage', 'layer','table'], function ...

Posted on Tue, 08 Oct 2019 23:35:11 -0700 by priya_amb

SpringBoot2 integrates ClickHouse database to achieve high performance data query and analysis

This article source code: GitHub. Click here || GitEE. Click here Introduction to ClickHouse 1. Basic Introduction Yandex open source data analysis database, named ClickHouse, is suitable for streaming or batch warehousing of sequential data. ClickHouse should not be used as a general database, but as a distributed real-time processing platfor ...

Posted on Tue, 08 Oct 2019 21:59:48 -0700 by ubersmuck

Leetcode Database Title: Employees with the highest salaries in the Department and all employees with the top three salaries in the Department

Look at these two leetcode database topics today     First: The Employee table contains all employee information, and each employee has its corresponding Id, salary and department Id. +----+-------+--------+--------------+ | Id | Name  | Salary | DepartmentId | +----+-------+--------+------- ...

Posted on Tue, 08 Oct 2019 18:24:16 -0700 by MadDawgX

How to pass an array into a SQL Server stored procedure

Resource from StackOverflow How do I pass array parameters using stored procedures? 1. It's too troublesome to split and parse strings. 2. Add Sql Server custom type sp_addtype Problem requirements: Array type parameters need to be passed to SP select * from Users where ID IN (1,2,3 ) Sql Server ...

Posted on Tue, 08 Oct 2019 10:35:17 -0700 by Maq