


Notes on using nginx+nginx-rtmp-module+ffmpeg to build a streaming media server (6)
Part 6
A few days ago, I have been troubled by the problem of starting nginx transplanted to the ARM development board. When starting on the ARM development board, either
nginx: [emerg] getgrnam("nogroup") failed (2: No such file or directory)
or
/system/bin/sh: ./nginx: cannot execute - Permission deniedappears. Use the command
adb shell chmod 755 /sdcard/mynginx/sbin/nginx
to modify permissions. No changes were made, and the permission modification was unsuccessful.
Always fails to run.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~
Today, with the help of my tutor, I pushed the cross-compiled nginx folder to the /data/misc/ directory instead of Re-run
adb push /sdcard/nginx/ /data/misc/nginx/
under /sdcard/mynginx/, but an error still occurs
nginx: [emerg] getgrnam("nogroup") failed (2: No such file or directory)
Then modify the nginx.conf file, remove the comment
#user nobody;
in the first line, change it to
user nobody;
, and then modify Run the command in the /data/misc/nginx/sbin/ directory and execute it successfully.
Use the command
./nginx -p /data/misc/nginx -c conf/nginx.conf
to view the running items:
ps
indicating that nginx is running successfully.
Open the browser on the development board and enter
root 2743 1 1328 456 c003f614 4002be64 S nginx nobody 2745 2743 1528 664 c00d8ad4 4002b7a4 S nginx root 2748 2708 956 332 00000000 40095448 R ps
The following page appears
nginx runs successfully.
http://localhost/
to kill the nginx process.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In summary, there is no permission to execute the nginx command on the sdcard or tfcard of the development board. Change to the /data/ directory .
The above introduces the notes (6) on building a streaming media server using nginx+nginx-rtmp-module+ffmpeg, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Chinese version
Chinese version, very easy to use

WebStorm Mac version
Useful JavaScript development tools

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver Mac version
Visual web development tools
