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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11337

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 11351

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 switch to tablet mode in win11? How to freely switch to tablet mode in win11 system

Course Introduction：Tablet mode is a mode that many users are very curious about, so how to switch to tablet mode in win11? In fact, the method is very simple. Let this website carefully introduce to users how to freely switch to tablet mode in win11 system. How to freely switch to tablet mode in win11 system 1. Open computer settings and click System in the upper left corner. 2. Then click "Tablet" below. 3. Just set it to open or not according to your own needs.

2024-02-12 comment 0 1402

How to create dark/light mode for website using JavaScript/jQuery?

Course Introduction：Dark mode is very important for any website. Users with different interests visit the website. Some people like dark mode and some people like light mode. According to a survey, about 70% to 80% of people prefer dark mode, while only 20% to 30% prefer light mode. Therefore, it is necessary to create a dark mode for any website that allows users to switch between dark and light modes. Below, we will create a simple web page using HTML, CSS, and JavaScript. Additionally, we will learn to implement light and dark modes using JavaScript and CSS. Syntax Users can follow the following syntax to switch between dark and light themes. body.classList.toggle("

2023-09-14 comment 0 1325

How to use PHP to implement a simple web template engine function

Course Introduction：How to use PHP to implement a simple web template engine function. A web template engine is one of the very useful tools in web development. By using template engines, we can separate the structure and content of web pages, simplify the development process, and improve code maintainability and reusability. In this article, we will introduce how to use PHP to implement a simple web template engine and provide specific code examples for reference. 1. Determine the needs Before starting to write code, we first need to determine our needs and clarify the functions of the template engine.

2023-09-24 comment 0 898

How to Detect if a User is in Dark Mode In Js

Course Introduction：Introduction Have you ever wondered how websites seamlessly switch between light and dark modes based on your preferences? It’s not magic—it's a clever use of modern web technologies. In this post, I'll reveal the simple yet powerful technique

2024-08-24 comment 0 663

JS implements the same web page layout sliding door and TAB tab example_javascript skills

Course Introduction：This article mainly introduces JS to realize the sliding door and TAB tab effects of the same web page layout. It uses the simple custom switching function setTab to realize the traversal and attribute switching of page elements. It has certain reference value and friends in need can refer to it. Down

2016-05-16 comment 0 1103

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