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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11338

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Shangxuetang MySQL video tutorial

Course Advanced 17642

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Band of Brothers front-end example display video tutorial

Course Advanced 11352

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

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Convert .HEIC to .JPG using ImageMagick in PHP

I'm hoping to try and create a small image converter that converts HEIC files uploaded to phpWeb documents to .JPG (or any other common file format). I'm running PHP on a unix server and have ImageMagick installed on the server. The following command line code runs on the server: mogrify-formatjpg*.HEIC I want to convert this command line code to PHP. As mentioned before, I like to convert command line formatting code to PHP. I currently have the following code set up in a basic HTML+PHP form. just

2023-11-02 17:38:57

Execute PHP script on button click without refreshing page

I'm having trouble using PHP and JavaScript. Goal: When the event listener of the HTML button in the .js file is called, the .php script should be executed without reloading the page. Expected result: When the button is clicked, the PHP script will be executed. In my case, the file from the URL will be downloaded to the server. Actual result: I don't know how to call a PHP script from a JavaScript file. I tried using AJAX but nothing worked. And I don't know where to put the JQuery library reference. I also tried using a form and in it

2024-02-17 12:27:38

Ways to fix issue 2003 (HY000): Unable to connect to MySQL server 'db_mysql:3306' (111)

I recently tried to containerize my FastAPIPython server (also for replication/doubling purposes). Before, I had just a MySQL server in a Docker container and everything was fine, but when I also made my web server a service, it couldn't connect to the MySQL server, so now the application doesn't work. Below is the code snippet of the server database initialization connector in the application fromfastapiimportFastAPIimportmysql.connectorapp

2023-09-05 11:18:47

Experiment with sorting after query limit

So this is my first question here, please forgive me if something is wrong. I'm trying to make a sort query based on constraints. So there is a Customers table with 90 records. I want to first perform a query limited to 3 records, and then sort the results of this query by a column called ContactName. I think this might be a nested query. Nested queries run fine in SQLServer, but don't know how to implement it in MySQL. Limit query: Select*fromcustomerslimit

2023-09-05 14:46:42

CSS Grid: Create new row when child content overflows column width

I have a two column layout based on CSS grid. When the content of the second column exceeds 1fr I want to create a new row. As it currently stands, the content simply overflows the column. One requirement of this layout is that the items in the right menu column are in one row. I achieve this with: .right-menu{...grid-auto-flow:columndense;...} If I remove the grid-auto-flow attribute, the overflow stops. However, the items are now stacked into multiple rows, which is not what I want. I also tried converting .ri

2023-09-05 15:18:28

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The error when the web page cannot be opened is 502 Bad Gateway

Course Introduction：The 502BadGateway error is a common HTTP error code that indicates a communication problem between the website server requested by the client and the server acting as a gateway. When users visit a web page, their requests go through a gateway server, which is responsible for forwarding the requests to the final target server. However, if the gateway server cannot connect to the target server, or the response received from the target server is invalid, a 502BadGateway error will occur. In this article we will

2024-02-19 comment 0 860

Want to assemble a server computer to play games?

Course Introduction：Want to assemble a server computer to play games? The main difference in playing games on the server is the graphics card and memory. The CPU and hard disk of the server machine are very high configuration. It is not recommended to use a server host to play games. It is not cost-effective. Is it good to assemble a personal computer with a server CPU? This is not recommended. 1. Although the performance of the server CPU is very strong, it is not suitable for playing games in home scenarios. 2. Because the server CPU is mainly designed to run complex computing tasks, its optimization focus is not on single-thread performance, but on multi-core concurrent processing. 3. Compared with the CPU of a home computer, its clock frequency is lower and its cache capacity is relatively smaller, which will cause its performance in single-threaded applications to be inferior to the CPU of a home computer. 4. Additionally, server CPUs typically

2024-04-24 comment 0 779

Is golang server useful?

Course Introduction：The golang server is useful and has important value and advantages in today's application and website development. Its high concurrency performance, excellent performance optimization capabilities, and easy-to-learn syntax features make golang an ideal choice for building high-performance and reliable servers. By using golang, developers can quickly build and scale servers that can handle large numbers of concurrent requests, and can easily deploy and maintain these servers. As the Internet continues to develop, golang servers will continue to play an important role in providing users with excellent networks. experience.

2023-07-19 comment 0 1132

How to use Swoole to implement a high-performance HTTP server

Course Introduction：How to use Swoole to implement a high-performance HTTP server. With the rapid development of the Internet, high-performance server applications are becoming more and more important. Swoole is a high-performance network communication framework based on PHP. It provides powerful asynchronous, concurrency, coroutine and other features, allowing developers to easily implement high-performance server applications. This article will introduce how to use Swoole to implement a high-performance HTTP server and provide detailed code examples. 1. Preparation First, we need to install S on the server

2023-11-07 comment 0 777

How to use Swoole to implement a high-performance HTTP long connection server

Course Introduction：How to use Swoole to implement a high-performance HTTP long-connection server 1. Introduction SwooleSwoole is a high-performance asynchronous network communication engine based on PHP. It can greatly improve the concurrent processing capabilities of PHP and implement high-performance network servers. Among them, Swoole's HTTP long connection server function is particularly powerful and can meet the needs of high-concurrency HTTP request processing. 2. Steps to use Swoole to create an HTTP long connection server. Prepare the environment. First, you need to ensure that the server is secure.

2023-11-07 comment 0 2294

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