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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11331

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 17634

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 11348

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 import picture nodes in Vscode_Steps to import picture nodes in Vscode

Course Introduction：1. First open the interface, click the extension store on the left, enter markdownlint in the search bar, and install the grammar prompt plug-in. 2. Then enter MarkdownPreviewEnhanced again and click the install button to install the preview display plug-in. 3. Open the file menu in the upper left corner, create a new md file, and click the preview icon in the upper right corner. 4. Finally enter the node code and click the node with the mouse to import the picture material.

2024-04-17 comment 0 739

How to unbind the Magic Mirror plug-in for CorelDRAW. Tutorial on how to unbind it.

Course Introduction：Magic Mirror plug-in is a very easy-to-use plug-in software for CorelDRAW. It contains a large number of CDR enhancement functions, which can perform batch conversion, batch map, variable data number, batch card/QR code/barcode, and one-click PS , batch color changing, picture font recognition, etc., which can effectively improve your work efficiency. But if you want to change the phone to use the plug-in, you need to unbind the plug-in first. Next, the editor will tell you how to unbind the Magic Mirror plug-in. The specific operations are as follows: 1. Open the CorelDRAW software running the Magic Mirror plug-in, and click [Magic Mirror] on the far left side of the Magic Mirror workbar. 2. Enter the activation code at the time of purchase in the [Activation and Unbinding Interface] that pops up. , click [Unbind and switch to another device]. 3. After the unbinding is successful, exit the software and reopen it. A pop-up will appear.

2024-02-13 comment 0 580

How to generate verification code in PHP

Course Introduction：Title: How to generate verification codes in PHP In web development, verification codes (captcha) are often used to prevent automated machine operations to improve website security. This article will introduce how to use PHP to generate verification codes and provide specific code examples. 1. Principle and process of generating verification code The principle of generating verification code is to embed a randomly generated picture in the page, and display the generated verification code text and picture to the user. The user needs to enter the verification code correctly when submitting the form. The process of generating verification code is as follows: server receives

2023-09-24 comment 0 1790

What is the method to modify the refresh rate parameters of win7 monitor? (27 words)

Course Introduction：How to modify the display refresh rate parameters in win7. Adjusting the refresh rate of the computer screen can give us a better browsing experience. Because the animation on the screen will play more smoothly, and the transition effect is also very comfortable when switching windows. Let’s take a look at where to adjust this parameter. Steps to modify and set the win7 monitor refresh rate parameters: 1. Right-click the mouse on a blank space on the desktop to select the screen resolution. 2. Find the advanced settings in the screen resolution interface that opens and click to enter. 3. Select the monitor interface to see the screen refresh rate adjustment options. The above is [How to modify the refresh rate parameters of the win7 display - Modify the refresh rate parameters of the win7 display

2023-06-30 comment 0 1240

How to add a background image to Douyin Live Companion - How to add a background image to Douyin Live Companion

Course Introduction：Many users who live broadcast on Douyin will use the Douyin Live Companion software, but do you know how to add a background image to the Douyin Live Companion? The following is the method of adding a background image to the Douyin Live Companion brought to you by the editor. If you are interested Users, please come and take a look below. First log in to Douyin Live Companion on your computer, and then enter the homepage. On the left, we select [Add Material] under [Scene 1]. Next, there will be a window to add materials on the page. We can directly select the [Picture] function and click to enter. We will then open a window where the image material is stored locally. We need to select the picture materials we want to add and then click the Open button in the lower right corner to add them. After adding the picture, we need to use the left mouse button to drag the picture to the appropriate

2024-03-05 comment 0 1377

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