Yang Qilong, a 7-year veteran of DBA, is currently working in Hangzhou Youzan Technology DBA. He is mainly responsible for database architecture design and operation and maintenance platform development. He is good at database performance tuning and fault diagnosis.
Last article (gh-ost online ddl change tool ...
Posted on Wed, 18 Sep 2019 02:51:33 -0700 by spiffy577
About Redis Cache
Why use caching?
Enhance the efficiency of accessing duplicate access data.
Three uses of Redis
Database, Cache, Message Middleware
Redis scenario (for data that is accessed repeatedly)
Page caching (static data such as pictures, CSS, html etc.) - hot spot data
Use Sugge ...
Posted on Tue, 17 Sep 2019 18:48:30 -0700 by denniston
[Text can only describe fragment information, specific details reference code]
Introducing POM dependencies
Posted on Mon, 16 Sep 2019 02:42:04 -0700 by Kurt
vsftp creates virtual users based on mysql
1. First install the environment
yum groupinstall -y "Development Tools" "Server PlatformDevelopment"
yum install -y pam-devel mariadb-devel mariadb-server vsftpd lftp ftp
//Download the latest pam-mysql
//Compile and install pam-mysql
tar xf pam_mysql-0.7RC1.tar.gz ...
Posted on Sun, 15 Sep 2019 21:22:02 -0700 by nou
Because the storage, query and calculation of geographic location information are needed in the project, it is decided to use the geometry type field of mysql (version 5.7) database to save geolocation coordinates and Virtual Generated Column to save geohash value for easy query.
You need to understand how geometry is used and its advantages.Si ...
Posted on Sun, 15 Sep 2019 02:48:15 -0700 by therainmaker53
Definition of Dictionary
With key-value storage, it has very fast lookup speed.
Dictionary keys are generally unique, and values can be of any data type.
A dictionary is an unordered collection of data.
Usually the order of output is different from ...
Posted on Thu, 12 Sep 2019 02:37:18 -0700 by cesar110
Environment: pycharm 3.6 MySQL Django HTML JS
1. Creating a virtual environment: python-m venv bxwx001
2. CMD enters the Scripts directory and enters the instruction: activate to activate the virtual environment
3. Download the package needed by the ...
Posted on Wed, 11 Sep 2019 22:47:54 -0700 by SuprSpy79
SpringBoot e-commerce project mall (20k+star) address: https://github.com/macrozheng/mall
This paper mainly illustrates mall deployment in Linux environment in the form of graphics and text. It involves installing Mysql, Redis, Nginx, RabbitMQ, Elastic search, Mongodb and SpringBook application deployment in Docker container based on ...
Posted on Tue, 10 Sep 2019 19:23:23 -0700 by triponline
-- Example table
CREATE TABLE `employees` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(24) NOT NULL DEFAULT '' COMMENT 'Full name',
`age` int(20) NOT NULL DEFAULT '0' COMMENT 'Age',
`position` varchar(20) NOT NULL DEFAULT '' COMMENT 'position',
`hire_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMEST ...
Posted on Mon, 09 Sep 2019 18:08:40 -0700 by Monkey-Moejo
1. Definition of strings:
a = 'westos'
b = "what's"
c = """
//User Management System
2. Characters of strings:
s = 'hel ...
Posted on Mon, 09 Sep 2019 05:01:10 -0700 by __greg