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Self-study IT network Linux load balancing video tutorial

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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

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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

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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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How to implement the drop-down menu effect of the navigation bar through pure CSS

Course Introduction：How to realize the drop-down menu effect of the navigation bar through pure CSS. In web design, the navigation bar is a very common component, and the drop-down menu is a common effect in the navigation bar. In this article, we will learn how to implement the drop-down menu effect of the navigation bar using only CSS, and provide detailed code examples. First, we need a basic navigation bar structure, as shown below: <navclass="navbar"><ulclass=&

2023-10-27 comment 0 1379

Steps to implement the drop-down menu effect of responsive navigation bar using pure CSS

Course Introduction：Steps to implement the drop-down menu effect of a responsive navigation bar using pure CSS. Nowadays, with the popularity of mobile devices, responsive design has become an important factor in web design. In the navigation bar design of web pages, in order to provide a better user experience, it is usually necessary to use drop-down menus to present more navigation options. This article will introduce how to use pure CSS to implement the drop-down menu effect of a responsive navigation bar, with specific code examples. Create an HTML structure First, we need to create a basic HTML structure, including the content of the navigation bar.

2023-10-19 comment 0 1377

Implementation steps of implementing menu navigation bar with shadow effect using pure CSS

Course Introduction：The steps to implement a menu navigation bar with shadow effect using pure CSS require specific code examples. In web design, the menu navigation bar is a very common element. By adding a shadow effect to the menu navigation bar, you can not only increase its aesthetics, but also improve the user experience. In this article, we will use pure CSS to implement a menu navigation bar with a shadow effect, and provide specific code examples for reference. The implementation steps are as follows: Create HTML structure First, we need to create a basic HTML structure to accommodate the menu navigation bar. by

2023-10-16 comment 0 1313

Blue horizontal secondary navigation menu effect code implemented by jQuery css_jquery

Course Introduction：This article mainly introduces the blue horizontal secondary navigation menu effect code implemented by jQuery css. It realizes the switching function of page element style through simple jQuery operating mouse events. It is very beautiful and generous. Friends who need it can refer to it.

2016-05-16 comment 0 1407

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 1200

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