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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11312

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 17626

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 11329

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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Honor Magic Vs3 folding screen mobile phone launched on JD.com: rectangular camera module in green, black and white colors

Course Introduction：Original title: Honor Magic Vs3 folding screen mobile phone launched on JD.com: rectangular camera module + green, black, and white colors, released on July 12 IT House news on July 8, Honor Magic flagship new product launch will be on July 12 It will be held on October 1, and will bring MagicV3 folding screen mobile phone, MagicVs3 folding screen mobile phone, MagicPad2 tablet computer (12.3 inches), and MagicBookArt14 notebook. 1. The MagicVs3 folding screen mobile phone is now available on the e-commerce platform, and its appearance poster has been released. Different from MagicV3, MagicVs3 adopts a rectangular camera module design, presenting a symmetrical look and feel. It is available in three colors: green, black, and white, and the specific name is unknown. Offers 256

2024-08-21 comment 0 1127

Honor Magic Vs3 folding screen mobile phone launched on JD.com: rectangular camera module + green, black and white colors, released on July 12

Course Introduction：Thanks to netizens for posting clues about something! According to news on July 8, the Honor Magic flagship new product launch conference will be held on July 12, which will bring MagicV3 folding screen mobile phone, MagicVs3 folding screen mobile phone, MagicPad2 tablet computer (12.3 inches), and MagicBookArt14 notebook. 1. The Magic Vs3 folding screen mobile phone, which has not been unveiled before, has now been put on e-commerce platforms such as JD.com, and its appearance poster has been released. This new phone uses a rectangular camera module design that is completely different from MagicV3, presenting a symmetrical look and feel. The product page shows that the Honor Magic Vs3 folding screen is available in three colors: green, black, and white. The specific name is currently unknown. Additionally, this product offers 25

2024-07-15 comment 0 1020

How to connect the front USB jumper on HP motherboard?

Course Introduction：How to connect the front USB jumper on HP motherboard? First, let’s understand the definitions of each front USB connection on the chassis. Under normal circumstances, red wire: positive power supply (marked on the wiring: +5V or VCC), white wire: negative voltage data line (marked: Data- or USBPort-), green wire: positive voltage data line (marked: Data+ or USBPort+), black wire: ground (marked as: GROUND or GND). Based on their own process design requirements, some chassis manufacturers have different signal line colors from those introduced above. In addition, considering the convenience, accuracy, and versatility of wiring to the motherboard, some chassis manufacturers make the USB cable on a module. Some chassis manufacturers consider the problem when connecting the USB cable to the motherboard.

2024-02-15 comment 0 1647

Thermaltake launches Ceres 350 MX mid-tower side-transparent chassis: supports back-mounted motherboard, 899 yuan

Course Introduction：According to news from this site on August 2, Thermaltake launched the Ceres350MX mid-tower side-transparent chassis on August 1. The chassis has a three-dimensional dimension of 245×463×475 (mm) and a volume of about 54L. It supports up to E-ATX motherboards and also supports back-plug styles. The official website price is 899 yuan, and it has not yet been put on the e-commerce platform. ▲The overall appearance of the black model is the same as that of many Thermaltake products, and the Ceres350MX chassis is available in a variety of colors. Its first model includes 7 styles: black, snow white, matcha green, hydrangea blue, racing green, bee yellow and bubble pink. The Ceres350MX chassis is equipped with a 4mm tempered glass panel on the left side and a replaceable dual front panel design on the front. ▲Racing green dual front panel design players can

2024-08-07 comment 0 1183

How to choose a tablet computer?

Course Introduction：Tips for selecting tablet computers 1. The best-selling brand computers at present are Apple, Dell, Lenovo, HP, Samsung and other manufacturers. Generally speaking, I personally think that Apple computers are mainly due to the brand’s popularity, but in fact the price/performance ratio is not very high. Dell's tablets are relatively high-performance models, while Lenovo and HP machines are also more distinctive. Samsung's research and development has been at a low point in recent times. 2. When we buy any product, we must have a purpose, that is, what you want to do. Buying a tablet is the same, whether it is for mobile work or entertainment, browsing the web, watching videos, listening to music, stock trading, playing games, using some office software, etc. Generally speaking, if there is a business need, Apple and Dell machines are very good, and Samsung can also be used.

2024-06-06 comment 0 401

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