Is it more expensive for multiple AJAX requests to consume server-side performance, or is server-side MySQL join more cost-performance?

There is such a requirement: There are multiple tables on the server, and they all have associated key Content-id. The previous practice was to: The front end sends an AJAX request, back-end MySQL according to Content-id, will be a number of

WeChat scan QR code, the user automatically pay attention to the public, the front page can also receive notifications, how to achieve it?

For example, this site Corn Net Reply content: For example, this siteCorn Net /** * @descrpition Attention * @param $request * @return Array */public static function Eventsubscribe (&A MP; $request) {$content = ' You are welcome to

Solve PHP process CPU 100%--file_get_contents trouble

Sometimes, the Linux server running Nginx, php-cgi (PHP-FPM) Web services, suddenly the system load up, use the top command to view, many php-cgi process CPU utilization is close to 100%. Later, I tracked the discovery that this kind of situation is

SOS: How does MySQL find results based on the given ID sequence?

Dear God, now I have a difficult problem that needs your help. There are two of the following tablesPost table: Article table.Record table: A table of records used to record the user's reading order. The record table records the primary key ID of

In PHP projects that use Requirejs, if PHP returns some JavaScript code, where do I put it?

If Requirejs is used in the front end of my PHP project, So what if some of the PHP code would return some JavaScript code snippets to run, where would you put the returned code? Always feel scattered to be very messy and difficult to maintain?

PHP processing WSDL

0x00 Preface Recently the interface has been written, before which the interface data transfer is transmitted or obtained using JSON or XML format. But this time with third-party intermodulation, they were given the WSDL format. Instant seconds

JavaScript-How should websites verify the authenticity of a member's WeChat account?

Now there's a public number that was intended to be used to send members to the public by using a registered user name Backstage get the member's account number and website user name to compare to judge the authenticity of the number The public

PHP Crawl Remote Picture tutorial

Before doing login development time, found that the avatar image does not have a suffix, the traditional image capture method does not work, need special crawl processing. So, later, the various situations together, encapsulated into a class, shared

What are the more mature frameworks for data collection and analysis in PHP or Python?

I now need to automate data collection on the list of articles in a Web site and the actual content in the list, which can get the ID of each article, And each article through a unified interface (parameter with that article ID to get to the

Usage issues with HTTP status code

As a front-end, recently began to write backstage, encountered some restful design problems, I hope that the great God to answer you. The restful specification emphasizes in particular HTTP Status CodesUse, but I have some doubts when I use it.

Using node. js to make a payroll system, I feel good why does the boss feel low level?

Reply content:In fact, the question of this kind of doubt I can understand, I believe that many people can understand (of course, most people look at the closed page will not be specifically to answer, I do not sleep at night to say two sentences).

JavaScript-Want to do a similar to the QQ Web version chat function, how to achieve??

When making web chat tools, how do you usually use real-time message delivery? All I know: Ajax polling (all say wasted resources, bad ...) ) EventSource (support is not good, IE is not supported at all.) ) Websoket (not very well known

PHP laravel DB join field name modification

Laravel $houses = DB::table('houses')->join('status', 'houses.status_id', '=', 'status.id')->get() housesTable has a status_id field, corresponding to the need to query to the status table name field; What $houses gets inside is the status field in

Windows7 after installing Laravel Homestead, card in SSH auth method:private key

System environment New Win7 64-bit flagship edition Administrator status Virtual box5.1 homestead2.2.1 Process In accordance with the Laravel Academy's tutorial installation, when you start a virtual machine using the Homestead Up

Laravel can Config::get (' App.timezone ') read the configuration, it is a one-time all the configuration files are read in?

It is a one-time read all the configuration files in, so efficiency seems a bit low Reply content: It is a one-time read all the configuration files in, so efficiency seems a bit low In fact, even if you do not use Config::get () to read the

Why does CentOS bring the vim with automatic completion, and the Mac comes with no

Title, I was looking at some of the CentOS help, found its own vim default with auto complement function, is ctrl+x, and then ctrl+o out of things. However, the Mac comes with Vim, I modified some of the VIM under the Mac configuration, such as open

PHP5.4 built-in Web server _php instance

PHP is a scripting language that requires the PHP interpreter to parse and run PHP files. When PHP is used as a CGI service Web request, it needs to be embedded in some kind of Web server, most commonly integrated into Apache or IIS, that is, before

How MySQL counts consecutive check-ins and cumulative sign-ins

Two questions: First, query the number of times accumulated check-in within a specified time (similar to post-bar, each user can go to each organization to check in once, but regardless of the user in several organizations sign in, as long as the

Slime: php5.6 source installation and Apache integration

This article by show according to Lin Feng to provide friendship sponsorship, starting in the mud row world. Apache Support for PHP is supported by Apache's MOD_PHP5 module, which is different from Nginx. Nginx is through the third-party fastcgi

Implementation and technique of dynamic news release in PHP

Do the site to do has a certain scale, dynamic news release is essential. There are many ways to do this, and it is recommended to use a text file to generate it quickly and easily. Well, let's get down to work right away. First, let's assume that

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