Programmer Think

1. Introduction First, you need to understand the MPM (Multi-Processing Modules) that Apache uses. MPM is the core of Apache, which manages network connections and dispatches requests.There are three types of MPM in Apache (perfork, worker, event). Apache Version 2.4 New features: 1. MPM supports loading at runtime; however, to tur ...

1, php Installation Preparation Environment System: CentOS Linux release 7.7.1908 PHP: php-7.4.6 2, Install PHP dependency package yum install gcc libxml2 libxml2-devel openssl openssl-devel bzip2 bzip2-devel libcurl libcurl-devel libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel gmp gmp-devel libmcrypt libmcrypt-devel rea ...

Our goal today is to set up a Nginx service on Centos to facilitate subsequent testing and learning.This is also the first step in learning about other Internet components.Next, I will describe the source code compilation process step by step, with some instructions. 1. Download the latest source code on the official website and unzip it The ...

Application and summary of CRC At present, there are two kinds of Crc calculation methods: Crc32 and Crc32mpg2. CRC error detection technology of cyclic redundancy test can prove that the data is complete and error free (it is only very similar to think that it is error free). The methods to ensure reliable data transmission are as follows: ...

Python script: Linux automatic installation of python2.7 or 3.6 Preface In the daily operation and maintenance process, in the deployment environment, it is often necessary to install or upgrade the python version. Here, a script is required for automatic installation and deployment. The implementation idea of this script is ...

The traditional database technology based on single machine has been unable to support the access processing of massive data. In this case, the database cluster gausdb 100, which supports the high expansion of the system and strong consistency of the sub database and sub table Sharding architecture, came into being. It is a distributed system ...

brief introduction The function of RTMP Streamer in streaming media system can be shown in the following figure. First, the video data is sent to the streaming media Server (Server, such as FMS, Red5, Wowza, etc.) in the form of RTMP, and then the client (generally Flash Player) can watch the real-tim ...

What is FastDFS? FastDFS is an open source, lightweight, distributed file system.He solves issues such as large data storage and load balancing.Especially suitable for online services with small and medium files (4KB < FileSize < 500MB), such as video, audio, picture websites, etc.FastDFS is an open source and lightweight distributed fi ...

Under Mac OS 10.14, when pyenv is used to install Python 3.7.0, an error is reported, as follows: xwszt@Linxyz:~$ pyenv install 3.7.0 python-build: use openssl from homebrew python-build: use readline from homebrew Downloading Python-3.7.0.tar.xz... -> https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz Installing Python-3.7.0. ...

The following are the installation statements: cd grpc_folder git submodule update --init cmake .. make -j 4 sudo make install However, when writing a program that depends on gRPC, it is found that the CMake file of gRPC cannot be called. The error prompt is as follows: include could not find load file: /usr/local/lib/cmake/grpc/gRPCTarg ...