Mysql数据库-锁-学习笔记
锁是什么 锁是计算机协调多个进程或线程并发访问某一资源的机制，用于管理对共享资源的并发访问 表级锁 表级锁，每次操作锁住整张表。锁定粒度大，发生锁冲突的概率最高，并发度最低。应用在MyISAM、 InnoDB等存储引擎中 表锁 表读锁 语法：lock tables 表名 read; 表写锁 语法：...
2022-07-07 06:28【白蝶丶】
阅读更多MySql数据库-索引-学习笔记
前言 作者最近在学习数据库索引，故想通过写博客的方式记录学习情况，如有错误，敬请指出。 一、索引简介 1.1索引是什么 索引是一个单独的、存储在磁盘上的数据库结构，包含着对数据表里所有记录的引用指针。使用索引可以快速找出在某个或多个列中有一特定值的行，所有MySQL列类型都可以被索引，对相关列使用...
2022-07-07 06:28【白蝶丶】
阅读更多LeetCode每日一题(2316. Count Unreachable Pairs of Nodes in an Undirected Graph)
You are given an integer n. There is an undirected graph with n nodes, numbered from 0 to n 1. You are given a 2D integer array edges where edges i = ...
2022-07-07 06:28【wangjun861205】
阅读更多【SVN】SVN是什么？怎么使用？
文章目录 SVN是什么？ SVN 1 简单概念 21 当两个程序员修改同一文件时/同一行时？ 30 SVN和Git区别： SVNGit 36 CVS和SVN区别： CVSSVN 46 SVN比起CVS优点： SVNCVS 54 SVN的主要功能： SVN 78 SVN主要应用： SVN 100 S...
2022-07-07 06:28【宋丹敏】
阅读更多JWT certification used in DRF
Usage scenarios of common status codes Status code Use scenarios 200 Service request succeeded , And responded to the data , Modification is ...
2022-07-07 09:12【FOR. GET】
阅读更多Cesium does not support 4490 problem solution and cesium modified source code packaging scheme
Reference address Cesium Source code packaging reference link https://jercky.top/2020/12/10/Cesium%E5%85%A5%E9%97%A8 5/ %E6%89%93%E5%8C%85%E4%BD%B...
2022-07-07 09:12【FOR. GET】
阅读更多Record of structured interview
I just participated in a structured interview yesterday , The interviewees are all graduate students master 、 Doctor , I felt the difficulty of fi...
2022-07-07 09:13【FOR. GET】
阅读更多Data association between two interfaces of postman
scene ： Driver login account app, The driver grabs the bill After the driver logs in successfully , The server returns a token, The driver's requ...
2022-07-07 09:13【zhangyr0916】
阅读更多Postman setting environment variables
Method 1 ： ① Click on postman Left column Environments, Click the add button ; https://img blog.csdnimg.cn/20210901165227516.png?x oss process=image...
2022-07-07 09:13【zhangyr0916】
阅读更多Postman data driven
One 、 What is data driven The process of executing test cases , Essentially different data for execution , Different input and output proc...
2022-07-07 09:13【zhangyr0916】
阅读更多Pytest installation (command line installation)
Premise ： Installed python Environmental Science （ Use pip install ） System ：windows ①win+r, function cmd; https://img blog.csdnimg.cn/2021090621290...
2022-07-07 09:13【zhangyr0916】
阅读更多Pycharm importing third-party libraries
First step ： Click the file button https://img blog.csdnimg.cn/20210906160607650.png?x oss process=image/watermark,type ZHJvaWRzYW5zZmFsbGJhY2s,shad...
2022-07-07 09:13【zhangyr0916】
阅读更多Pycharm create a new file and add author information
① Click on the file Set up https://img blog.csdnimg.cn/20210906161522968.png?x oss process=image/watermark,type ZHJvaWRzYW5zZmFsbGJhY2s,shadow 50,t...
2022-07-07 09:13【zhangyr0916】
阅读更多Jemter operation
1.jemter Cannot directly link to the database , One needs to be installed first jmeter Connect mysql Database files mysql connector java 5.1.7 bin.jar...
2022-07-07 09:13【zhangyr0916】
阅读更多Leetcode daily questions (2316. count unreachable pairs of nodes in an undirected graph)
You are given an integer n. There is an undirected graph with n nodes, numbered from 0 to n 1. You are given a 2D integer array edges where edges i = ...
2022-07-07 09:14【wangjun861205】
阅读更多[SVN] what is SVN? How do you use it?
List of articles SVN What is it? ？ SVN 1 Simple concept 21 When two programmers modify the same file / On the same line ？ 30 SVN and Git differe...
2022-07-07 09:14【Songdanmin】
阅读更多Mysql database index study notes
Preface The author has been studying database indexing recently , So I want to write a blog to record my learning , If there is a mistake , Please...
2022-07-07 09:14【White butterfly】
阅读更多Mysql database lock learning notes
What is a lock A lock is a mechanism by which a computer coordinates multiple processes or threads to access a resource concurrently , Used to man...
2022-07-07 09:14【White butterfly】
阅读更多Mysql database transaction learning notes
Here's the catalog title Preface 1 What is the business 4 The nature of the transaction 9 Concurrent transaction problems 15 Transaction i...
2022-07-07 09:14【White butterfly】
阅读更多Error: selenium common. exceptions. WebDriverException: Messag‘geckodriver‘ execute
https://img blog.csdnimg.cn/c8b9372b6ac24b6288a7a1ae170d564a.png?x oss process=image/watermark,type d3F5LXplbmhlaQ,shadow 50,text Q1NETiBAemhhbmd5cjA...
2022-07-07 09:14【zhangyr0916】
阅读更多
边栏推荐
- JS get all date or time stamps between two time stamps
- POJ - 3784 running medium
- How can I check the DOI number of a foreign document?
- C语言整理（待更新）
- 抽絲剝繭C語言（高階）指針的進階
- Databinding exception of kotlin
- [UVM practice] Chapter 2: a simple UVM verification platform (2) only driver verification platform
- Oracle makes it clear at one time that a field with multiple separators will be split into multiple rows, and then multiple rows and columns. Multiple separators will be split into multiple rows, and
- Pytest+request+allure+excel interface automatic construction from 0 to 1 [familiar with framework structure]
- 注解@ConfigurationProperties的三种使用场景
猜你喜欢
subject Given a binary search tree , Find the nearest common ancestor of the two specified nodes in the tree . In Baidu Encyclopedia, the most r...
summary Spring Cloud Bus coordination spring cloud config Use dynamic refresh that enables configuration . https://img blog.csdnimg.cn/9d4f9981c5da...
目录 一、什么是2PC %E4%B8%80%E3%80%81%E4%BB%80%E4%B9%88%E6%98%AF2PC 二、2pc解决方案之XA %E4%BA%8C%E3%80%812pc%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88%E4%B9%8BXA 三、2pc解...
Link to the original text ： https://www.cnblogs.com/booturbo/archive/2020/04/13/12693858.html https://www.cnblogs.com/booturbo/archive/2020/04/13/126...
在k8s里频繁的进行应用软件测试时，需要频繁的查看日志 此时，需要频繁的获取pod的名称， 很麻烦，如何快速查看日志呢? 问题描述 如何快速查看flannel相关的某个pod日志呢？ https://img blog.csdnimg.cn/49b0ad45cf0c4bee846ef390de3e64...
Stockage des données de profilage en profondeur en mémoire Introduction 1 1. Description du type de données 1 5 1.1 Classification de base des types ...
不合理的需求，如何能轻松搞定？ 文章较长，建议提前收藏。 可能99%的同学不做搜索引擎，但99%的同学一定实现过检索功能。搜索，检索，这里面到底包含哪些技术，希望本文能够给大家一些启示。 需求一：我想做一个全网搜索引擎，不复杂，和百度类似就行，两个月能上线吗？ 全网 搜索引擎架构与流程如何？ 5...
e272940b45fb17bee4b4ac6e1cbef911.gif https://img blog.csdnimg.cn/img convert/e272940b45fb17bee4b4ac6e1cbef911.gif author Machine center editor...
background ： Need to be in .net core The access suffix in the website is properties The file of , Discover direct access 404, After consulting collea...
文章目录 SVN是什么？ SVN 1 简单概念 21 当两个程序员修改同一文件时/同一行时？ 30 SVN和Git区别： SVNGit 36 CVS和SVN区别： CVSSVN 46 SVN比起CVS优点： SVNCVS 54 SVN的主要功能： SVN 78 SVN主要应用： SVN 100 S...