Beauty of Mybatis source code: 2.12. Parse the 'environments' element to complete the multi environment configuration in' Mybatis'

Parsing environment elements to complete multi environment configuration in Mybatis After finishing the tedious process of configuring the Configuration object based on settings, it's time to parse the environments tab and configure the Mybatis multi environment. Mybatis supports multi Environment configuration by default. There is an Environme ...

Posted by salathe on Sat, 27 Jun 2020 06:24:08 +0200

A tutorial of using redis in golang

Original link: https://blog.csdn.net/wangshubo1989/article/details/75050024/ Life goes on, go go go!!! Previously, I introduced how to use sqlite3 in golang: <Go practice - go language operates sqlite database (The way to go)> Today I want to share with you how to use redis database in golang. ##What is redis Official website:https:/ ...

Posted by phynias on Fri, 26 Jun 2020 10:36:55 +0200

Distributed transaction solution -- Seata -- Implementation

Distributed transaction solution -- Seata -- Implementation Seata Background Seata version selection Seata practice 1. Problem description 2. Problem location 3. Solutions Seata Seata is an open source distributed transaction solution, which is committed to providing high-performance and easy-to- ...

Posted by matstuff on Fri, 26 Jun 2020 10:14:12 +0200

The splicing exercise of sqlzoo table -- Movie Database

sqlzoo more join -- Movie Database 1. List the first film of 1962, [display id, title] SELECT id,title FROM movie WHERE yr=1962 2. The first movie year of the movie "Citizen Kane". select yr from movie where title= 'Citizen Kane' 3. List all the Star Trek series movies, including id, ...

Posted by abushahin on Fri, 26 Jun 2020 07:49:43 +0200

Introduction to temporary tablespaces of PostgreSQL and Greenplum

The temporary tablespace of PostgreSQL, through the parameter temp_tablespaces are configured. PostgreSQL allows users to configure multiple temporary tablespaces. When configuring multiple temporary tablespaces, use commas to separate them. If temp is not configured_ Tablespaces parameter. The temporary tablespace corresponds to the default ...

Posted by ajdegans on Fri, 26 Jun 2020 04:42:55 +0200

The difference between int and int(11) in Mysql

[1] The difference between int(3) and int(11) (cognitive error of thinking inertia) Here, 3 or 11 represents the specific length stored in the database, always thinking that int(3) can only store 3 numbers of length, and int(11) can only store 11 numbers of length. [2] Mysql Basics When learning M ...

Posted by mmorton on Fri, 26 Jun 2020 03:45:53 +0200

The simplest Spring Security tutorial in history: successful login to SuccessHandler advanced usage

  So that is what it is. We are lucky to know how to configure the page that is successfully logon after the login and how to specify the system to jump to an address. Yes, it's so simple. The Spring Security framework helps us do most of the work, but we can use it with a little configuration. How ...

Posted by JUMC_Webmaster on Thu, 25 Jun 2020 13:09:20 +0200

Spring Boot: integrate basic operations of JPA and MyBatis

PostgreSQL is an object relational database management system (ORDBMS) of free software with complete characteristics. It is an object relational database management system based on POSTGRES, version 4.2 developed by the computer department of the University of California. Many of the leading concepts ...

Posted by buducom on Thu, 25 Jun 2020 10:26:30 +0200

Redis Basic Application Demo

Article catalog 1, Redis common command operations 1. String type 2. Hash type 3. List type list 4. Unordered set 5. Ordered sort 2, Distributed shared session 3, Remote login reminder offline 4, Register SMS verification code 1, Redis common command operations 1. String type Assignment comm ...

Posted by sosha on Thu, 25 Jun 2020 09:51:27 +0200

java multithreaded Callable -- segment a large list and merge the results

Code reference http://bbs.csdn.net/topics/391070227?page=1     Here is the posted Code: public void dealListWithMutiThread(){ List<Object> list = new ArrayList<Object>(10000); int index = 0; ExecutorService ex = Executors.newFixedThreadPool(5); int dealSize = 2000; List&l ...

Posted by l9pt5 on Wed, 24 Jun 2020 07:20:34 +0200