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Self-study IT network Linux load balancing video tutorial

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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 17658

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

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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 solve the sound problem of Win11 games

Course Introduction：What should I do if there is a sound problem in Win11 games? Many users have encountered strange sounds when playing games on the win11 system. So what is going on? Users can directly click on the sound under settings, and then click on more sound settings to explore. Let this website carefully introduce to users the solution to the problem of noisy sound when playing games in Win11. Solution to the noise when playing games in Win11 1. First, we open the settings through the start menu. 3. Then open more sound settings at the bottom. 5. Finally, disable all sounds in the enhancement and save it.

2024-01-29 comment 0 1674

What should I do if there is a sound problem in Win11 games? How to solve the problem of noisy sound when playing games in Win11

Course Introduction：What should I do if there is a sound problem in Win11 games? Many users have encountered strange sounds when playing games on the win11 system. So what is going on? Users can directly click on the sound under settings, and then click on more sound settings to explore. Let this website carefully introduce to users the solution to the problem of noisy sound when playing games in Win11. Solution to the noise when playing games in Win11 1. First, we open “Settings” through the start menu. 2. Then open the "Sound" settings. 3. Then open "More Sound Settings" at the bottom. 4. After opening, right-click and use

2024-02-11 comment 0 1356

How to fix the sound problem in Win7 Ultimate system

Course Introduction：What should I do if there is no sound in Win7 Ultimate Edition? Recently, some users and friends of win7 ultimate version encountered a strange problem. The computer was fine yesterday. Today I turned on my computer and suddenly found that there was no sound. How to fix there is no sound in win7 ultimate version? Many friends don’t know what to do if there is no sound in Win7 Ultimate, so this issue will introduce how to fix the problem of no sound in Win7 Ultimate. How to repair silent system in Win7 Ultimate System: Click the Start button in the lower left corner of the Win7 operating system desktop and select the Control Panel option to enter. Enter the control panel interface and click the System and Security option to enter. Click the FAQ option to enter and continue to the next step. Enter the common computer problem solving interface and click the audio in the lower right corner

2023-07-13 comment 0 1433

Solve the sound problem that win10 cannot connect to the Bluetooth speaker

Course Introduction：When using win10 system, you may encounter the prompt "Cannot find Bluetooth speaker". The editor thinks that in this case, you can try to check the hardware device or the sound driver. The specific method depends on what the editor said, I hope it can help you. What to do if win10 sound cannot find the Bluetooth speaker? The first method is 1. Right click, click 2. Open, click, there will be three parts, which are the drivers. 3. Click 4. After updating 3, then search for the device, perfect Solution to the second method 1. Right-click the lower left corner of the computer and click 2. Find the Bluetooth device icon, click on it, and click on the Bluetooth driver in the frame below. Right-click the mouse and select. If it is a problem with your computer's Bluetooth driver, the system will automatically update you to the latest driver. 3. Driver update

2023-12-25 comment 0 1885

What happens if there is a problem with the sound card driver?

Course Introduction：The sound card driver is a system program in the computer that controls and directs the sound card. It can help us play sound. Therefore, if there is a problem with the sound card driver, the most intuitive situation is that in terms of sound, there will be no sound or the sound will fluctuate and freeze abnormally. What will happen if there is a problem with the sound card driver: 1. Sound error 1. The sound card driver serves the sound, so the most intuitive problem is the sound problem. 2. Whether there is no sound from the computer, or the sound is stuck, delayed, noisy, or the volume tone is abnormal, it may be related to the sound card driver. 3. So when we encounter similar problems, we can try reinstalling or updating the sound card driver. 2. Exclamation mark in Device Manager 1. If there is no problem with the sound, it means that the sound card driver is normal in most cases. 2. But I

2024-03-02 comment 0 473

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