Programmer Group

1: Introduction to thread pool Using thread pool, you can reuse threads and control the total number of threads. If the thread pool is not used, a new thread should be opened for each task. The overhead of repeatedly creating threads is large, and too many threads will occupy too much memory. This is too expensive. We want to have a fixed num ...

1. Key objects The connection object -- com.mysql.jdbc.JDBC4Connection contains all configuration parameters about mysql. The setting method is set in the form of parameters attached to the url preparedStatement object -- com.mysql.jdbc.ServerPreparedStatement 2. Data result set reading method There are three types: One is in the form ...

1, Project requirements Don't write it first. We'll add it when we're finished 2, Design ideas It's late today. Just make a code record. It's all on paper and will be added later 3, Day 1 project diary 1. Today's summary: I wrote half a server today, Main functions 1) You can create a server using Tcp protocol, define the port yourself, a ...

1, Background          I have accumulated a lot of commands related to the server in my work, which are commonly used. Record and share them with you. I hope it will be helpful. 2, Common commands 1. vim enters the file, exits the editing mode, executes DD to delete a whole line, and 20dd to delete 20 ...

Process and thread definition A process is a program in execution (the object code is stored on the media). A process includes not only the running program, but also some other resources, such as open files, suspended signals, internal kernel data, processor status, etc. An execution thread is projected in a section of memory, which also c ...

This is an article on configuring the server environment (for Python projects) (nanny tutorial) I can only say that configuring the server is really too simple. Just have a hand 1: Prepare the necessary documents The documents are as follows: DockerfileProject coderequirements.txt As shown in the figure: You need to create these three ...

[Linux high concurrency server] producer and consumer model Article overview This article is a personal note of Niuke C + + project course: Linux high concurrency server, which records some knowledge points of producer and consumer model Author information NEFU 2020 zsl ID: fishingrod / fishing rod Email: 851892190@qq.com You are welcome ...

introduction Full backup is to back up all data contents. There are a lot of duplicate data in the backup data, and the time of full backup and recovery is very long. The solution to the problem of full backup is to use incremental backup. Incremental backup is to back up the files or contents added or changed since the last backup. 1 ...

Nginx common functions 1. Http proxy, reverse proxy: As one of the most commonly used functions of web server, especially reverse proxy. When working as a reverse proxy, nginx provides stable performance and flexible forwarding function. Nginx can adopt different forwarding strategies according to different regular matching, such as file ser ...

lsof is system management/ security Uber tools. Call this tool lsof a real name, because it means "lists open files". One thing to remember is that in Unix, everything (including network sockets) is a file. Interestingly, lsof is also one of the Linux/Unix commands with the most switches. It has so many switches, and it has many opti ...