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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11332

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 17635

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 11348

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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Apple's MR headset Apple Vision Pro faces price and functionality challenges

Course Introduction：According to news on June 8, Apple recently released its first mixed reality (MR) headset, Apple Vision Pro. However, taking into account factors such as the price and the lack of some basic functions, market research firm TrendForce predicts that Apple Vision Pro will only ship approximately 200,000 units by 2024. TrendForce previously stated in late May that Apple’s first MR headset is mainly aimed at developers, and shipments this year may not exceed 100,000 units. However, with the latest forecast released, the company is cautious about the sales prospects of Apple Vision Pro. Apple Vision Pro uses a micro-OLED screen with a total resolution of up to

2023-06-09 comment 0 1215

The iPhone 16 series is going to sell out! Apple is confident

Course Introduction：The media published a blog post stating that Apple has notified other suppliers and partners such as Foxconn that the shipment target of the iPhone 16 series models in 2024 will increase by 10% compared with the iPhone 15 series (81 million units), to at least exceed 90 million units. Apple is very optimistic about the shipments of iPhone 16 series models. One of its important driving factors is the Apple Intelligence introduced in the IOS 18 system clock, which can greatly enhance product competitiveness and stimulate users' upgrade needs to attract their purchases. 1. Apple’s increase in stocking target for the iPhone 16 series reflects Apple’s positive attitude towards market demand for new models, and clearly reflects Apple’s full confidence in the upgrade and release of new products.

2024-07-19 comment 0 467

Global cellular IoT module shipments fell by 2% in the third quarter of 2023: Quectel, Fibocom and China Mobile were the top three

Course Introduction：News from this site on January 4, according to the latest report released by market research agency Counterpoint Research, in the third quarter of 2023, due to many factors such as weak demand, rising interest rates, and cautious spending by enterprise IoT players, global cellular IoT module shipments increased year-on-year. down 2%. The 5G market's share of the global cellular IoT module market exceeded 5% for the first time. Due to the lack of killer use cases and higher prices, 5G applications are currently very limited and are mainly used in routers/personal terminal equipment, personal computers and automotive markets. The IoT module market is in the technological transition stage from 4GCat1 and NB-IoT to 4GCat1bis. 4GCat1bis has the characteristics of low cost and high energy efficiency, so it is suitable for PO

2024-01-05 comment 0 704

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 1205

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 1061

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