mysqldump backs up multiple libraries at a time
There are 20 + databases in a database instance, and 10 + of them need to be backed up in this backup. Use mysqldump to directly back up and step on a warning and an error.
Database version: 5.7.26
The process is as follows:
mysqldump -hrm-2ze04c849v9m32bzj.mysql.rds.aliyuncs.com -uadminr ...
Posted on Tue, 26 May 2020 07:57:51 -0700 by ponies3387
How to judge the user's operation authority through Session
In most of the web development process, according to the actual needs, it is necessary to divide the rights of administrators and ordinary users to operate the web site. The following is a comprehensive explanation through a specific code example.
(1) Design a landing page, add a form ...
Posted on Tue, 26 May 2020 02:46:38 -0700 by phpmady
Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, password, and session management. With Shiro's easy to understand API, you can quickly and easily access any application, from the smallest mobile application to the largest network and enterprise application.
Posted on Sat, 23 May 2020 03:24:28 -0700 by lulubell
1. limit usage of Mysql
When we use query statements, we often need to return the first few or some middle rows of data. What should we do at this time? never mind, mysql We have such a function.
SELECT * FROM table LIMIT [offset,] rows | rows OFFSET offset
The LIMIT clause can be used to force a SELECT statement to return the spec ...
Posted on Thu, 21 May 2020 01:00:12 -0700 by jpopuk
Class is also an object
Before you understand metaclasses, you need to master the classes in Python.
The concept of classes in Python is a bit strange in light of Smalltalk. In most programming languages, a class is a set of code snippets that describe how to generate an object.
This is still true in Python:
>>> class ObjectCreator(obj ...
Posted on Mon, 18 May 2020 02:07:56 -0700 by RyanSmith345
1. Summary of knowledge points
2. Case introduction
3. Layout file
4.1 entity class:
4.2 create database
4.3 CRUD operation
5.1. Difference between getWritableDatabase() and getReadableDatabase():
5.2. Interface description of SQLiteDataBase object
Posted on Sun, 17 May 2020 03:20:04 -0700 by exploo
1. Single line comments in SQL statements
2. Multiline comment
3. Create a new database
4. Delete database
5. Create table
6. Delete data table in MySQL
7.MySQL insert data
8.MySQL query data
9.MySQL UPDATE records
10.MySQL DELETE statement delete records
11.MySQL LIKE clause fuzzy query
12.MySQL UNION operator union query
Posted on Sat, 16 May 2020 03:43:33 -0700 by terandle
Ribbon Load Balancing
Simple steps to use:
1. New module for load balancing
2. Modify the module code:
3. Start module
4. Modify the consumer module
Load balancing algorithm:
Custom load rules:
(viii)Connect Last Spring Cloud Cognitive Learning (1): Introduction to Spring Cloud and Eureka Use
(viii)The previous article introduc ...
Posted on Thu, 14 May 2020 21:34:05 -0700 by kool_samule
Training DeepFM under PAI-Notebook
It should be said that DeepFM is one of the most common CTR prediction models at present. For a recommendation system based on CTR estimation, the most important thing is to learn the combination of features behind user click behavior.In different recommended scenarios, low-order or high-order combinatorial fe ...
Posted on Thu, 14 May 2020 20:06:07 -0700 by ZaZall
The previous chapter introduced the ORM framework briefly, and wrote a tool class similar to orm. This chapter will introduce the Core version of Entity Framework, a famous ORM framework in the C ා world.
The non Core version of Entity Framework has been updated to 6 generations, which is a proven ORM framework. Here is a brief intro ...
Posted on Thu, 14 May 2020 03:05:51 -0700 by rebelo