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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11222

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 17566

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 11276

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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Build a great video player application using Webman

Course Introduction：Build an excellent video player application using Webman With the rapid development of the Internet and mobile devices, video playback has become an increasingly important part of people's daily lives. Building a powerful, stable and efficient video player application is the pursuit of many developers. This article will introduce how to use Webman to build an excellent video player application, and attach corresponding code examples to help readers get started quickly. Webman is a lightweight web based on JavaScript and HTML5 technology

2023-08-25 comment 0 1311

Music player production example (html5)

Course Introduction：related skill HTML5+CSS3 (to achieve page layout and dynamic effects) Iconfont (use vector icon library to add player related icons) LESS (dynamic CSS writing) jQuery (quickly write js scripts) gulp+webpack (automated build tool to compile and compress LESS, CSS, JS, etc. code) Implemented functions Playback is paused (click to switch playback status) Next song (switch to next song) Random play (automatically play the next song after the current song is played) Single loop (click

2017-06-20 comment 0 3720

The Potential of C++ in Mobile App Development: Innovative Use Cases

Course Introduction：C++ has huge potential in mobile application development, as its high performance, cross-platform compatibility and code reusability make it ideal for applications requiring outstanding performance and innovative use cases. 1. The Unity game engine is built using C++, providing a powerful game development platform and supporting cross-platform game creation on mobile devices. 2. The Netflix streaming application uses C++ to optimize video streaming and enhance playback quality, leveraging underlying hardware access to achieve a seamless streaming experience on mobile devices.

2024-06-02 comment 0 739

Bing suddenly announced that it is fully open, which is a surprise!

Course Introduction：On May 4, Microsoft’s official blog announced the release of the new Bing chatbot equipped with GPT-4. I tested it and found that it is a castrated version of 4.0. The difference is still huge! Today I will take you to play with the new Bing and see what fun and interesting functions it has? 1. Three major question and answer styles to meet a variety of scenarios. Compared with GPT, it provides three conversation styles, namely creative, balanced, and precise. Choose different styles, and the color of the background will also change accordingly, allowing us to compare Finding richer and more reasonable answers is actually a different prompt, which is very convenient! At this time, everyone will ask what are the differences between these three styles? After a simple test, the creative effect of writing text is better, and the accuracy of writing code is even better. 2. Problem guidance

2023-05-07 comment 0 1462

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 1137

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