Programmer Group

SMTP Send Mail Send mail import smtplib from email.mime.text import MIMEText from email.header import Header # Configuring Mailbox Server smtpserver = "smtp.163.com" # User/password user = "admin@163.com" password = "123456" # Sender mailbox sender = "admin@163.com" # Receiver mailbox receiver = ...

Environmental Science: 192.168.205.37: as master server 192.168.205.47: as slave server Edition: OS: centos 7 1810 with mini install mysql-5.7.26-el7-x86_64.tar.gz Purpose: GTID(global transaction ID) global transaction identifier, MySQL 5.6 version began to support, GTID replication, unlike traditional replication (asynchronous delayed re ...

In this article, we will analyze the source code of the server when zookeeper establishes the connection. Here we skip the process of the server startup (because it contains too much content, one article can not finish), and look directly at the code of the server to process the request. There are two kinds of NIOServer CnxnFactory and Netty Se ...

brief introduction Socean.RPC is a high-performance RPC framework under.Net. The framework is targeted at high performance and high stability. The underlying layer is based on socket, and its code is concise. The total code size is about 2000 rows, without third party library references, and the frame performance is high. It can reach 10w+ per ...

The internal network is installed by offline package. First, Download Download address: https://dev.mysql.com/downloads/mysql/ After entering the page, click the link on the right. Download the corresponding version. Upload to the server through xftp6 and other tools. II. Installation and Configuration 2.1 Query and uninstall Ma ...

Client:Multiple customers can send and receive information normally, because they can send and receive information at the same time, not wait after sending information.Return information, so add multithreading public class Client { public static void main(String[]args) throws UnknownHostException, IOException { System.out.println("Client ...

Spark Streaming provides two types of built-in streaming media sources. Basic source: The source directly provided in the StreamingContext API. Example: File system and socket connection. Advanced resources: Kafka, Flume, Kinesis and other resources can be obtained through additional utility classes. ...

Preface: The encapsulation of xtrabackup by innobackupex is a reliable physical backup tool launched by percona. Official Link Address For mysql, logical backup can use mysqldump, mysqlpump, mysqldumper, and physical backup can use innobackupex directly. Installation: For convenience, I use centos ...

target Understanding what BIO is, understanding the limitations of BIO   understand BIO: block I/O, synchronous blocking, server implementation mode is a connection thread, that is, when the client has a connection request, the server needs to start a thread for processing, if the connection does ...

  Based on the knowledge of process and thread learned before, and the principles of network communication tcp and udp, you can write a small program that mimics qq. 1. Operating Interface: (Simple, you can change the style according to your own requirements) 1. Server interface:   2. Client I ...