The principle of the MySQL connection 4 methods to optimize the connection, the performance is improved by 240% Foreword In the last two articles, we talked about three ways to optimize table return in MySQL: push down ICP under index conditions, multi-range read MRR and covering index. MySQL’s optimization tool Pushing down index conditions improves […]
Tag: connection
[Mysql] The principle of table connection in Mysql (11)
Introduction to connections In actual work, the data we need to query is likely not to be placed in one table, but needs to be obtained from multiple tables at the same time. Let’s take two simple tables as an example to illustrate. The nature of connection To facilitate testing, first create two simple tables […]
Exploring network attacks: ARP disconnection, ARP spoofing and DNS spoofing experimental analysis
Table of Contents Preface 1. Overview of ARP 1.1 What is ARP 1.2 Basic functions of ARP protocol 1.3 ARP cache table 1.4 Common ARP commands 2. ARP disconnection experiment 3. ARP spoofing experiment 3.1 Pictures intercepted from the intranet 3.2 Obtain HTTP account password 4. DNS spoofing experiment Summarize Hi! I am Filotimo__. Nice […]
JDBC database connection—Common CRUD class attached
Article directory JDBC database connection 1 guide package 2 Write configuration file 3. Write code to connect to the database 4 Test tools 5 additional 1 General CRUD class 2 Test CURD class 3 tests JDBC database connection This article takes the MySQL database as an example. If you want to switch to other databases, […]
Flume construction and installation When uploading HDFS web pages, the connection was refused…Trying::1…telnet: connect to address::1: Connection refused
Table of Contents 1. Flume 1.Features of Flume: 2. What can Flume do? 3. Flume collection and storage 4. Flume’s three major components 5. Flume official website connection Chinese version 2. Install Flume (1) Upload and decompress the software package (2) Configure environment variables 3. Test Flume (1) Edit the Flume configuration file and start […]
Python connection to MySQL database programming
Get more information Personal website: Brother Tao talks about Python Database programming is a critical part of interacting with the database and managing data in your application. MySQL is a popular relational database management system (RDBMS), and MySQL database programming is relatively easy in Python. This article introduces how to use Python for MySQL database […]
Java connection to zookeeper
API ZooKeeper officially provides a Java API, which can be connected to the zookeeper service for operation through Java code. You can connect, create nodes, obtain node data, monitor node changes and other operations. Specifically, there are the following important classes: ZooKeeper: The ZooKeeper class is the core class of the Java API, used to […]
Netty+SpringBoot creates a TCP long connection communication solution
The path to growth as a programmer Internet/Programmer/Technology/Data Sharing focus on This article should take approximately 12 minutes to read. From: blog.csdn.net/u013615903/article/details/129044283 Background of the project text 1. Project structure 2. Project module 3. Business process 4. Detailed explanation of code 5. Test 6. Source code postscript Project background Recently, an Internet of Things project […]
Long connection, short connection, heartbeat mechanism
Long connection, short connection, heartbeat mechanism The relationship between HTTP protocol and TCP/IP protocol HTTP long connections and short connections are essentially TCP long connections and short connections. HTTP is an application layer protocol, using TCP protocol at the transport layer and IP protocol at the network layer. The IP protocol mainly solves network routing […]
Configuration of Oracle connection to MySql
Can be combined with reference Configuration of Oracle connecting to MySql through gateway_oracle21c gateway configuration mysql-CSDN blogSee this document 1. Description 1. Server status Server A: win 64, IP: 192.X.X.X, ORACLE 11g and client 11g have been installed. Instance orcl, user test, password 123456 Server B: win 32-bit, 192.168.X,X, installed with mysql. Database test, user […]