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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11450

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 17736

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 11438

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 use the picture preview plug-in in uniapp to realize the picture enlargement viewing function

Course Introduction：How to use the picture preview plug-in in uniapp to realize the picture enlargement viewing function. Specific code examples are required. With the popularity of mobile devices, pictures play an increasingly important role in our daily lives. When developing mobile applications, how to implement image enlargement viewing function has become a common requirement. Using the uniapp framework can implement such functions more quickly and is compatible with multiple platforms. In uniapp, you can use third-party plug-ins to realize the image enlargement and viewing function. The most commonly used plug-in is uni-

2023-10-20 comment 0 2139

How to use the zoom function in AutoCAD2007-How to use the zoom function in AutoCAD2007

Course Introduction：The article brought to you today is about the AutoCAD2007 software. Do you know how to use the zoom function in AutoCAD2007? Below, the editor will bring you how to use the zoom function in AutoCAD2007. Interested users, please come and take a look below. Click the AutoCad2007 shortcut icon on the desktop, as shown in the figure. Drag the mouse to draw a rectangle for demonstration, as shown in the figure. Enter sc in the command bar and press Enter or select Zoom in the shortcut toolbar. Select the object to be scaled and click with the mouse. Specify the basic point of scaling, the basis for scaling. Enter the zoom ratio and press Enter, as shown in the figure. See the effect of zooming.

2024-03-04 comment 0 711

Why can't I drag the drawing function in Windows 10? Solution to the problem that drawing and pasting cannot be dragged in Windows 10

Course Introduction：When we use the computer's built-in drawing function, we sometimes need to drag a picture into it as a background image. So why can't the drawing function of win10 be dragged? Users can check whether the drag-and-drop function is enabled, make sure the drag-and-drop function is enabled or check the clipboard history settings. Let this site carefully introduce to users the solution to the problem that win10 drawing and pasting cannot be dragged. . Solution to the problem that drawing and pasting cannot be dragged in win10 1. Check whether the drag-and-drop function is enabled and make sure that the drag-and-drop function is enabled. Open "Control Panel", then select "Appearance and Personalization" - "File Explorer Options", under "View

2024-02-13 comment 0 1562

jQuery implements the method of zooming in and out of images by scrolling the mouse (with demo source code download)_jquery

Course Introduction：This article mainly introduces the method of jQuery to implement scrolling mouse to zoom in and out of pictures. It analyzes the jquery mousewheel plug-in to implement mouse event response and dynamic operation techniques of page element attributes. It also comes with demo source code for readers to download and refer to. Friends who need it can refer to it.

2016-05-16 comment 0 1475

How to solve the problem of incomplete display when printing ppt

Course Introduction：Solution to incomplete display when ppt is printed: 1. Check the page settings to ensure that the page size matches the printing paper size; 2. Adjust the zoom ratio and try different zoom ratios until the complete slide content can be seen in the print preview; 3. Adjust the size of the text box, select the text box, and then drag the border to adjust the size to ensure that the text can be fully displayed on the printed page; 4. Optimize the picture resolution and use image editing software to adjust the picture resolution to be suitable for printing size; 5. Print preview, use print preview to check whether the PPT content is displayed completely.

2023-07-06 comment 0 16298

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