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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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Implementation Guide for UniApp to Implement Image Carousel and Scroll Notification

Course Introduction：UniApp is a cross-platform development framework that can quickly develop applications that support both iOS and Android. In mobile application development, image carousels and scrolling notifications are common functions. This article will introduce how to use UniApp to implement these two functions, and attach code examples. 1. Picture carousel implementation guide Picture carousel is a common function in mobile applications. Multiple pictures can be displayed by sliding the screen or automatically switching pictures. The following are the steps to use the UniApp framework to implement image carousel: Step 1

2023-07-04 comment 0 3768

How to use JavaScript to scale content that automatically loads when scrolling to the bottom of the page while maintaining the aspect ratio effect?

Course Introduction：How can JavaScript achieve automatic scaling of content when scrolling to the bottom of the page and maintain the aspect ratio effect? In modern web design, scrolling to the bottom of the page to automatically load more content has become a common feature requirement. When the loaded content contains images, we often want these images to maintain their original aspect ratio. This article will introduce how to use JavaScript to implement this function and provide corresponding code examples for reference. First, we need to get the scroll position of the page. inJavaScr

2023-10-27 comment 0 877

Use WeChat applet to achieve page sliding effects

Course Introduction：Using WeChat Mini Programs to Realize Page Sliding Effects With the continuous development of WeChat Mini Programs, more and more developers have begun to use WeChat Mini Programs to develop a variety of practical applications. Among them, the page sliding effect is a very common and dynamic effect. This article will introduce how to use WeChat applet to achieve page sliding effects and provide specific code examples. In the WeChat applet, we can use the swiper component to achieve the sliding effect of the page. Swiper can scroll content horizontally or vertically, supporting gesture sliding and automatic wheel

2023-11-21 comment 0 1501

java automatically converted to golang

Course Introduction：With the development of business and the upgrading of technology, many companies are gradually switching from Java to Golang, because Golang has higher performance and efficiency, and is especially suitable for high concurrency and big data application scenarios. However, in enterprise-level projects, the conversion cost and time are relatively high due to the large amount of code. Therefore, in order to improve development efficiency and code quality, automatically converting Java code to Golang is a very important technology. The challenge of automatically converting Java code to Golang due to Java

2023-05-15 comment 0 853

Example code for horizontal adaptive slide switching effects written based on jquery_jquery

Course Introduction：The full-screen adaptive jquery focus image switching special effect has reconciled the annoying browser compatibility issue of IE6 and is compatible with IE6. Applicable browsers: IE6, IE7, IE8, 360, FireFox, Chrome, Safari, Opera, Maxthon, Sogou, Window of the World. Related codes:

2016-05-16 comment 0 1127

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