Building a Node.js Enterprise Web Server from Scratch: Middleware

About middleware In a broad sense, middleware refers to software that can provide functions for applications other than the operating system, ranging from various services of cloud computing vendors to detection modules in a certain field. Express middleware refers specifically to software modules that provide functions based on the Express mi ...

Posted by bbreslauer on Fri, 01 Jul 2022 21:34:39 +0300

ROS robot development

Chapter I ROS Foundation 1.ROS installation http://wiki.ros.org/kinetic/Installtion/Source http://wiki.ros.org/kinetic/Installtion/Ubuntu https://blog.csdn.net/qq_44339029/article/details/120579608?spm=1001.2101.3001.6650.1&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7EBlogCommendFromBaidu%7Edefault-1-120579608-blog-106 ...

Posted by Porl123 on Thu, 30 Jun 2022 21:54:29 +0300

Analysis of ffmpeg hardware accelerated playback framework

summary Ffmpeg provides API interfaces, and users can call these APIs to realize various functions of ffmpeg. To design the hardware decoding framework of video based on ffmpeg, we need to deeply understand the hardware decoding framework of ffmpeg. Therefore, this paper first analyzes the code framework of ffplay, starts with ffplay, goes dee ...

Posted by nivosh on Thu, 30 Jun 2022 21:54:01 +0300

New in Kubernetes: programming in yaml

Author | Wu Peng Introduction Performance testing is a routine requirement in daily development work to find out the performance of services. So how to do performance testing? Either it is done by coding, writing a bunch of scripts, and throwing it away after use; or it is based on the platform, and it is carried out in the process defined by ...

Posted by almightyad on Thu, 30 Jun 2022 21:09:31 +0300

Write, append, read, and copy of golang files: examples of using bufio packages

Write, append, read and copy operations of golang files There is an OpenFile function under the os package of the Go language. Its prototype is as follows: func OpenFile(name string, flag int, perm FileMode) (file *File, err error) Where name is the file name of the file. If you are not running under the current path, you need to add the spe ...

Posted by teddmcload on Thu, 30 Jun 2022 16:56:27 +0300

Select structure_ Standard switch statement and selection structure_ Penetrated switch statement

Select statement   Select statement --switch switch statement format: switch(expression) { case Constant value 1: Statement body 1; break; case Constant value 2: Statement body 2; break; ... default: Statement body n+1; break; } First, calculate the value of the expression Secondly, compare with case in turn. Once there is a corr ...

Posted by vbmurray on Thu, 30 Jun 2022 16:48:25 +0300

IV. source code analysis of nacos Registry -- health detection

I. core principle flow chart II. The client monitors the server 2.1 implement udp listening The constructor of PushReceiver will trigger the initialization of listener public PushReceiver(HostReactor hostReactor) { try { this.hostReactor = hostReactor; this.udpSocket = new DatagramSocket(); thi ...

Posted by spitfire_esquive on Thu, 30 Jun 2022 16:41:17 +0300

MyBatisPlus configuration log, use of CRUD

Configuration log All our sql is invisible in mybatisplus, so we need to configure logs during development. After the development is completed, we can cancel the logs, because logs also consume resources #Configuration log mybatis-plus: configuration: log-impl: org.apache.ibatis.logging.stdout.StdOutImpl #Console output only logs Afte ...

Posted by Bike Racer on Thu, 26 May 2022 01:56:14 +0300

Graphical artifact Graphviz -- a good helper for learning data structure

   Official website Download and install the version of the corresponding system, and enter it in terminal dot -version can check whether the installation is successful. If the corresponding version information does not appear, you can consider configuring environment variables or reinstalling. 1. Basic grammar    like C langua ...

Posted by krish_s on Thu, 26 May 2022 01:13:13 +0300

Front and rear end development summary-1

SpringBoot 1, The WebMvc configuration class of springboot makes the static resources inaccessible The webmvc configuration class of springboot causes an error in accessing the static file. The specific error reason is not known (no detailed look at the source code). Generally, inheriting the WebMvcConfigureSupport class will cause such problem ...

Posted by parka on Thu, 26 May 2022 00:47:09 +0300