php - A website running online, how to check whether which sql statement needs optimization?

For example, if a website is running online and it is found that a certain page loads slowly, how can you check whether a SQL statement needs to be optimized?

天蓬老师 2017-06-05 11:07:52 0  5  678

After the website goes online, Apache quickly takes up all the memory and causes the server to crash.

There is a company website with more than 6,000 IP visits per month. The server configuration was changed to a 4G memory centos server. Apache 2.4 is used as the website server. The website uses pseudo-static reverse proxy access through the proxy server. Just about 5 minutes after it went online, a...

ringa_lee 2017-05-16 16:57:22 0  1  647

PHP Chinese website public welfare live class: "Revealing the whole process of Web projects from analysis to online", starting tonight!

A new large-scale free public welfare live class on the PHP Chinese website has started! For three consecutive nights, all P friends, please move your benches and get ready! Training objectives: reveal the complete process of a Web project from analysis and planning, environment construction, use of...

PHPz 2018-08-07 10:59:05 0  1  2953

Registration for "The Third Phase of PHP Practical Training Course on PHP Chinese Network" is officially launched!

Dear fans of php Chinese website! Here comes the good news! Registration for your long-awaited "php Chinese website third phase of php online practical training course" is now officially open! Registration QQ: 498668472 (Teacher Zhu), 88526 (Brother Zhu) Course name: "php Chinese webs...

PHPz 2018-07-26 16:30:52 2  10  3142

javascript - Monitor if user closes browser offline

I am working on a web system that needs to verify whether it is online. For the online situation, I added an online field in the user table. 1 means online and 0 means offline. There is an exit button in the website. When the button is clicked to exit normally, the online field of the user table is ...

PHPz 2017-06-05 11:09:36 0  3  780

Chinese website tutorial online code demonstration function fails

Address: //m.sbmmt.com/code/1088.html This problem will occur not only at this address, but also at similar addresses.

Tassel 2017-08-31 10:02:07 0  1  1109

TP5.0 website online error: Multiple Choices The document name yo

TP5.0 网站上线报错：Multiple ChoicesThe document name you requested (/index/index/) could not be found on this server. However, we found documents with names similar to the one you requested.Available docume

“橙”-景安服务器** 2018-12-11 18:14:51 0  0  1077

Preview of teaching content for September 6, 2018: Detailed explanation of the definition, function and use of PHP namespaces

Preview of the teaching content of the third online class of PHP Chinese website on September 6th: 1. Teaching topic: Namespace 2. Teaching time: 20:00 ~ 22:003. Teaching format: Online live broadcast 4. Viewing address: http:/ /m.sbmmt.com/course/944.html5. Preview materials: http://php.net/manual/z...

天蓬老师 2018-09-06 10:59:59 0  0  1197

How to implement on-site message queue in Laravel?

Do you have any detailed plans and ideas? I want to make the site online, transmit conversation messages, and prompt the other party for new messages. How to do this well?

大家讲道理 2017-05-16 16:55:03 0  1  537

Preview of teaching courses on September 7, 2018: Introduction to common design patterns and MVC

Preview of the teaching content of the third phase of the PHP Chinese website online class on September 7, 2018: 1. Teaching topics: singleton mode, factory mode, registration tree mode, MVC design ideas. Lecturer: Peter Zhu2. Teaching time: 20:00 ~ 22:003. Teaching format: Online live broadcast 4. ...

藏色散人 2018-09-07 10:49:47 0  6  1470

atom win32 connection address

All downloads online are 64-bit, are there any 32-bit ones? The official website download shows 32-bit, but after the download is successful, it is still 64-bit.

唐 2018-01-10 13:59:47 0  2  1575

node.js - How does electron get the elements in webview, which is the loaded website?

When loading an online website, how do I get the elements in the webview? I can't get it. I hope someone can give me some advice! I'm a newbie and I still don't understand much.

大家讲道理 2017-05-16 13:42:29 0  1  1125