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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11330

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 17632

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 11347

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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Pure CSS3 mouse over image mask layer animation effect

Course Introduction：This article mainly introduces the animation effects of pure CSS3 mouse sliding over the image mask layer.

2017-03-06 comment 0 3138

jquery scroll left and right focus image banner image to display up and down page buttons after the mouse passes_jquery

Course Introduction：jquery scrolls the focus image banner image left and right, and the mouse moves over to display the upper and lower pages. It is suitable for pages with relatively large width and height. A demo is attached. Interested friends can refer to the following

2016-05-16 comment 0 1016

The jquery plug-in realizes the effect of displaying a large image when the mouse passes over the right side of the image (similar to Taobao)_jquery

Course Introduction：Share a jquery plug-in: it achieves the effect of displaying a large picture when the mouse passes over the right side of the picture on Taobao. Friends who are interested can study it. It may be helpful for you to learn jquery. Don’t miss it.

2016-05-16 comment 0 1016

CSS achieves the effect of scaling the image when the mouse passes over it (code example)

Course Introduction：CSS3 achieves the effect of zooming the image when the mouse passes over it (slow changes, the zooming process has an animated transition)

2018-09-05 comment 0 3352

How to set the mouse to display the image when passing through the element in css

Course Introduction：In CSS, you can use the ":hover" selector to achieve the effect of displaying pictures when the mouse passes over an element. The ":hover" selector is used to specify the special style added when the mouse pointer floats on an element. The syntax format is "element:hover{background: url (The map's address);}".

2021-07-21 comment 0 10941

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