rocketmq transaction message
The transaction message of rocketmq is used as a solution to distributed transactions on some occasions. Today, let's an...
SQL digital injection details + iwesec instance
Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on th...
MySQL database log, backup and recovery
catalogue
Log type and function: 1.redo redo log 2.undo r...
Experiment 3: single table query
Experimental purpose Master the application of simple SQL query statements, including the application of conditions, lik...
pg_terminate_backend() operation and maintenance transformation -- nonsuperuser supports kill autovacuum worker
1, Background introduction In view of security considerations, the superuser of the database is generally only in the ha...
Didi x StarRocks: high speed multidimensional analysis creates greater business value
As a leading enterprise in the field of life services, Didi group is comprehensively testing and launching StarRocks. Af...
SQL Server Database -- creation and use of stored procedures
1, Stored procedure 1. Stored procedure
...
The differences between hive query statement and mysql
These are the two tables emp and Dept often used in online database examples. The first is dept and the second is emp
...
Alibaba Druid database connection pool take-off directly
1. What is a database connection pool
Why use...
The of Java design pattern -- bridging pattern
1. What is bridging mode?
Decouple an abstrac...
What's new in. NET6 -- struct optimization
Some optimizations have been made for Struct in. NET6. Let's take a look at the optimizations for Struct in. NET6 throug...
Flask project housing list page, orders, docking Alipay, database optimization
House List Page from . import api from flask import g, current_app, jsonify, request, session from ihome.utils.respon...
How to obtain the same enterprise level full link gray scale capability in 20 minutes?
Introduction: MSE microservice engine will launch the professional version of service governance, providing out of the b...
Getting started with python django getting started with models operation
I have 10 years of java development experience and now work in Telecom. I need to learn python and record my learning re...
Oracle developer intermediate Lesson 8 (Merge) experiment
summary This experiment refers to the in DevGym Experimental guide.
...
I used Python to make a mailbox bomber to send e-mail to the finance. Unexpectedly, she chased me and shouted six
A project in recent work has the requirement to automatically send some information emails to the specified mailbox, so ...
Bao Jianjia operation
requirement You need to enter dB by the given field_ Create their own mode under qingniuThe tables created need to meet ...
Slow SQL statement of PostgreSQL
Author: Song Shaohua
1, Reading guide Optimization is ver...
SQL injection (query method and blind injection)
Many injections have no echo, which may be caused by the problem of SQL query method. At this time, we need to use relev...
After reading the three questions of Redis cache, make sure you can talk to the interviewer.
In daily development, database is used to store data. Since there is usually no high concurrency in general system tasks...
Complete analysis of Boolean blind injection of SQL injection
Injection principle Boolean blind annotation is applicable when there is no echo during injection. The principle is that...
MHA high availability cluster deployment and failover
preface If there is a problem with the master server in the master-slave server, what should I do without affecting the ...
MySQL database query exercise
Exercise 01 There is a department table, employee table, jobs table and job table as follows_ Grade table, locations tab...
In the same method, Mybatis requests the database multiple times. Do you want to create multiple SqlSession sessions?
Suddenly a question came to mind: every time we execute SQL Will create one SqlSession，Then in a transaction, multiple m...
MySQL master-slave replication, read-write separation theoretical analysis + practical demonstration
introduction In enterprise applications, mature businesses usually have a large amount of data. If the reading and writi...