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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11425

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 17716

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 11416

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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How to use CSS3 to implement a navigation drop-down menu (complete code attached)

Course Introduction：In the current web page structure, the navigation menu bar occupies a very important position, because it can not only display examples, but also give you the most intuitive impression of the content. As we all know, in HTML <ul><li></ li></ul>The menu can be hierarchical, then we can implement the navigation drop-down menu with css3.

2018-09-26 comment 0 5529

Three ways to implement the secondary drop-down menu in the navigation menu in JS

Course Introduction：Three ways to implement the secondary drop-down menu in the navigation menu in JS

2016-12-08 comment 0 1377

JS implements drop-down menu login registration pop-up window

Course Introduction：This time I will bring you JS to implement a drop-down menu login and registration pop-up window. What are the precautions for JS to implement a drop-down menu login and registration pop-up window? The following is a practical case, let’s take a look.

2018-04-19 comment 0 2584

Classic_Use js to quickly implement mouse and keyboard selection drop-down menu (detailed code explanation)

Course Introduction：I spent a few hours sorting out the code, how to use js to implement mouse selection and keyboard operation drop-down menu, a very classic practical case. js changes the font color and background when the mouse passes over, and then displays the drop-down menu. Normally, the drop-down menu is hidden.

2018-07-25 comment 0 1694

A drop-down menu combining css and js supports mainstream browsers_javascript skills

Course Introduction：This is a drop-down menu that combines CSS and JS. It has been tested to support mainstream browsers and is more suitable for corporate websites. Friends who need it can refer to it.

2016-05-16 comment 0 1173

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