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Self-study IT network Linux load balancing video tutorial

Course Intermediate 10928

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 16931

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 10632

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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Empire CMS ecmsinfo universal tag_PHP tutorial

Course Introduction：Empire CMS ecmsinfo universal tag. Information calling tag with template: [Universal Tag] (ecmsinfo) Tag name: Information calling tag with template (sys_GetEcmsInfo) Format: [ecmsinfo] column ID/topic ID, number of items displayed, title cutoff

2016-07-13 comment 0 900

Is Yuzu Coin worth investing in?

Course Introduction：Based on current market conditions and inherent risks, investing in EOS is not recommended. The project’s centralization, opaque governance, technical limitations, and intense competition make it a riskier investment. Walmart's cutoff, regulatory uncertainty and weak investor interest further heighten risks. Investors should exercise caution before investing in any cryptocurrency.

2024-04-28 comment 0 332

How mosfet works

Course Introduction：The working principle of MOSFET: The gate bias applies an electric field, which produces a field effect in the substrate. The field effect forms an inversion layer connecting the source and drain. The inversion layer forms a path, and current flows from the source to the drain to achieve conduction. When the gate bias is removed, the inversion layer disappears and the current flow is blocked, achieving cutoff.

2024-04-27 comment 0 291

What is the ps threshold mainly used for?

Course Introduction：The threshold in PS is a black-and-white dividing value based on the brightness of the image. Thresholding an image is a method of applying special processing to colors. It is the cutoff value that turns a color picture into a black and white picture with different contrast. Its default value is 50% neutral gray, which is 128. If the brightness is higher than 128, it will become white, and if the brightness is lower than 128, it will become black.

2019-05-27 comment 0 10366

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