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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11324

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 17630

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 11334

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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jquery implements navigation drop-down menu effect code suitable for portal sites_jquery

Course Introduction：This article mainly introduces jquery to implement the navigation drop-down menu effect code suitable for portal sites. It can realize the function of sliding the mouse over the menu items to achieve the drop-down list display effect. It is of great practical value. Friends who need it can refer to it.

2016-05-16 comment 0 990

Detailed graphic explanation of how to use native JS to achieve accordion navigation effect

Course Introduction：When you browse the website, have you noticed that there are many styles of navigation, such as breadcrumb navigation, drop-down menu navigation, accordion navigation, etc. As a front-end developer, do you know how to use native JS to achieve the accordion navigation effect? This article will tell you about the idea of creating an accordion effect with native JS and the JS accordion effect code. It has certain reference value and interested friends can take a look.

2018-10-25 comment 0 3940

How to solve the problem of 403forbidden on win10 webpage

Course Introduction：How to solve the problem of 403forbidden on win10 web page? When many friends use the browser software of win10 system, sometimes the error code 403forbidden will appear. In this case, even a web page cannot be opened normally. This situation is most likely caused by an old version of the browser software or incompatibility with the win10 system. You only need to download compatible browser software. Below, the editor will bring you a solution to the 403forbidden issue on web pages. Solution to 403forbidden appearing on the webpage 1. Use the win+x shortcut key to open the system menu, click and select "Programs and Features", as shown in the figure below: 2. In the Programs and Features interface,

2023-06-29 comment 0 3908

What to do if 0xa0430721 error code appears in Google Chrome. How to solve Google 0xa0430721 error code.

Course Introduction：What should I do if the 0xa0430721 error code appears in Google Chrome? Some friends reported online that when downloading Google Chrome, they were prompted with the 0xa0430721 error code, which resulted in the failure to successfully download Google Chrome. How should we solve the above situation? The editor has compiled the steps to fix the 0xa0430721 error code in Google Chrome, let’s take a look! Solution 1. Press the win+R shortcut key on the keyboard to pop up the run window, enter regedit in the input box of the run bed and click Enter. 2. In the opened Registry Editor, find the Edit option at the top, click the Edit button and find the Find button in the list that appears. 3. Click the search button, enter Google in the search window that appears and then

2024-08-27 comment 0 422

What to do if the web page cannot be displayed? The editor will teach you how to fix the problem that the web page cannot be displayed.

Course Introduction：When I was typing code today, my colleague suddenly turned off my power plug, which directly caused my code to disappear. When I turned on the computer again, I found that the browser could not access the Internet. A prompt that the web page could not be displayed appeared, but the computer could be accessed normally. QQ chat. Today, the editor brings you a detailed graphic solution to the problem that the browser cannot display the web page. Sometimes the computer can obviously access the Internet, such as Tencent QQ, Kugou, etc., but it always prompts that the web page cannot be displayed when opening it using a browser. Have you ever encountered such a situation? In addition to being poisoned, the editor below will teach you how to Quickly fix web pages that don't display. The following is a detailed fix for the webpage that cannot be displayed: The webpage cannot be displayed - 1 Method 1: Internet option setting problem 1. Find the browser's menu--

2024-01-12 comment 0 1225

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