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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11360

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 17663

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 11378

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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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

PHP full text search functionality using AND, OR and NOT operators

Newbie question: I'm trying to implement a full text search on a search string using php and eloquent. $searchstring="+(victimsuspect)+crime-covid";$searchresult=RssItem::whereRaw("MATCH(description)AGAINST('$searchstring'INBOOLEANMODE)")->ge

2023-09-05 15:06:32

Shortest way to convert all PHP types to string

I'm writing a general system that I hope can one day be applied to fields like medicine (i.e. it's "scientific"). I think the best way is to represent all the data in php with strings (true will be "true", false will be "false" and so on). The reason for this is that in php any value has a unique string representation (such as the php code itself). I post this question to speed up the design process of this program. Some values are easily converted to strings: numbers, booleans, etc. Some are not easy: objects, arrays, resources. I think the transfer object and

2023-09-05 15:34:44

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A detailed explanation of tag languages other than PHP and their uses

Course Introduction：HTML and CSS HTML and CSS are common tag languages in web development. HTML is used to define the structure of web pages, while CSS is used to control the style of web pages. Specifically, HTML uses various tags to represent different elements of a web page, such as titles, paragraphs, links, pictures, etc. CSS uses style rules to design the appearance of these elements, including color, font, size, layout, etc. Here's a simple HTML and CSS example: &lt

2024-03-11 comment 0 1192

what are web standards

Course Introduction：Web standards are a set of specifications and guidelines used to ensure that web pages display and run correctly across different browsers and devices. Including specifications for technologies such as HTML, CSS, and JavaScript. The HTML specification defines various tags and attributes used to create various elements of web pages. The CSS specification defines various style attributes and selectors used to control fonts, Color, layout, animation, etc. JavaScript specifications define syntax, built-in objects and functions, etc., which are used to process user input, respond to events, and modify web page content.

2023-09-20 comment 0 2439

How to add hyperlinks to web text in Visual Studio

Course Introduction：Open an existing web page and insert a div tag. Set the position of the hyperlink and float it based on the left side. The hyperlink is positioned 20 pixels from the top, using the padding-left attribute. Insert an a tag to set a hyperlink. Use the color attribute to set the color of the hyperlink text. The color value is #b200ff. Set the font size of the hyperlink to 30 pixels. Set the identifier of the hyperlink, the identifier is denglu. Defines the class name of the element specified in the hyperlink. Finally, click on the text to jump to the specified page, and the function to implement the hyperlink is ClickEntry. Don't forget to insert the hyperlink text, the text is placed between the two a tags. Browse the web, insert hyperlink text into the web page to log in,

2024-06-03 comment 0 585

How to change video playback speed using JavaScript?

Course Introduction：In this article, we will learn how to use the HTML5 video tag to change the playback speed of a video embedded in an HTML document. A number less than 1 will slow down the video, a number greater than 1 will speed up the video, and then a number 1 will return the video to its original speed. Also note that playbackRate is an attribute and not an HTML attribute. Although you don't want to change the playback rate for each video site, you can do so if you think your visitors will prefer it. This only requires one HTML element to set! The PlaybackRate property allows us to change the playback speed. These are its grammatical rules. Syntax letvideo=document.querySelector('v

2023-08-26 comment 0 3121

How to install win7 operating system on computer

Course Introduction：Among computer operating systems, WIN7 system is a very classic computer operating system, so how to install win7 system? The editor below will introduce in detail how to install the win7 system on your computer. 1. First download the Xiaoyu system and reinstall the system software on your desktop computer. 2. Select the win7 system and click "Install this system". 3. Then start downloading the image of the win7 system. 4. After downloading, deploy the environment, and then click Restart Now after completion. 5. After restarting the computer, the Windows Manager page will appear. We choose the second one. 6. Return to the computer pe interface to continue the installation. 7. After completion, restart the computer. 8. Finally come to the desktop and the system installation is completed. One-click installation of win7 system

2023-07-16 comment 0 1222

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