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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11322

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 17629

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 11333

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 cover the native navigation bar and status bar with custom pop-ups in Uniapp development

Course Introduction：When developing apps and mini-programs using the Uni framework, since the native navigation bar and status bar are rendered by the native framework, their level will be higher than that of all content areas, including the custom pop-up component <uni-popup></uni provided by DCloud -popup> also cannot achieve the purpose of covering the native navigation bar. After reading the technical information, many developers said that nvue can be used to achieve this effect, but I feel that the implementation process is too complicated and the compatibility is not very good. Is there any simple way to cover the native navigation bar...

2021-08-30 comment 0 253

How to convert xlsx and xls

Course Introduction：Conversion method: 1. Open the excel file that needs to be processed and click "File" in the top navigation bar; 2. In the pop-up interface, click "Save As"; 3. In the "Save As" interface, click "Browse"; 4. In the pop-up window, select the save location and set the save type to ".xlsx" or ".xls" as needed.

2021-04-20 comment 0 55888

How to operate reverse order in excel

Course Introduction：Operation method: First, select the cell column that needs to be sorted in reverse order; then click the "Data" option on the top navigation bar; then select "Descending Order" in the "Sort" area of the "Ribbon", and a pop-up window will appear. Just click "Sort".

2020-12-22 comment 0 45414

What should I do if I accidentally close the resource manager in Windows 10?

Course Introduction：Solution: 1. Use the shortcut key "Ctrl+shift+esc" to open the task manager; 2. Click "File" in the top navigation bar, and click "Run New Task" in the menu that opens; 3. In the pop-up In the dialog box, enter "explorer" and click "OK".

2021-03-25 comment 0 38283

Scroll up and down the page to change the positioning of the top navigation

Course Introduction：Recently I came across a design effect requirement from a designer, which has also been implemented on other websites: state1: when the webpage scrolls down, the page header bar disappears, and the top nav moves upward; state2: when the webpage scrolls up, the page header bar appears, and the top nav leans down along nav. The page already contains the following functions: 1. When a pop-up window pops up, the pop-up window layer can be scrolled, but the page layer does not allow scrolling. At this time, the overflow style attributes of the body element and html element in the page are both set to hi

2017-07-22 comment 0 1900

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