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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11447

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 17735

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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What functions can javascript achieve?

Course Introduction：JavaScript (JS for short) is a widely used scripting language that is often used for front-end interaction and dynamic effects on web pages. It can achieve many functions, including but not limited to the following: 1. Web page interaction The most common use of JavaScript is to achieve various interactive effects in web pages, such as sliding, clicking, pop-up boxes, etc. Using JS you can easily change elements on a web page in response to user actions. 2. Form validation When users fill in data in the form, JS can verify the data to ensure that the input format is correct.

2023-05-09 comment 0 2286

JavaScript learning summary [1] First introduction to JS

Course Introduction：JavaScript is a cross-platform, object-oriented, dynamic, weakly typed, lightweight interpreted language. It is a client-side scripting language that is object- and event-driven and has relative security. Applied to HTML documents, it can provide dynamic interaction capabilities on the website, which is different from Java. Simply put, it processes HTML documents based on the browser, implements various web page special effects, responds to various user operations, adds dynamic effects to the web page, and improves the user operating experience, such as picture scrolling playback effects, clicking the login button to pop up a dialog box, and moving the mouse in and out. Animation, form submission data validation, etc.

2017-02-09 comment 0 1205

How to deal with unauthorized products displayed in Lenovo Word? How to activate Lenovo Word without authorization?

Course Introduction：When a Lenovo user opens the built-in Word, an unauthorized product is displayed. What is going on? This problem is not uncommon. If you have encountered a similar problem, let's take a look at how the editor solved it. Solution: We click the desktop shortcut to start the word document. We click [File] on the menu bar. In the pop-up page information, we click [Account]. In [Product Information], we click [Change License Verification]. In the pop-up page, we click [Use another account]. On the login to activate Office page, click [Enter product key instead] at the bottom. After entering the [Key], click [Install this product] below. A dialog box will pop up, showing [Downloading office updates]. follow

2024-08-26 comment 0 1134

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 1271

php-insertion sort

Course Introduction：:This article mainly introduces php-insertion sort. Students who are interested in PHP tutorials can refer to it.

2016-08-08 comment 0 1129

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