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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11340

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 17646

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 11353

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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Supports mobile-side HTML5 Canvas realistic blackboard effects

Course Introduction：This is a blackboard special effect made using HTML5 Canvas. The blackboard special effect supports mobile phones. It can simulate the effect of using chalk to write on a blackboard. Features of this blackboard effect include:

2017-01-19 comment 0 1653

HTML5 Canvas mobile lucky draw special effects

Course Introduction：This is a lucky draw special effect based on jquery and HTML5 Canvas. The lucky prize special effect supports mobile terminals. It generates a grand prize disk by dynamically constructing Canvas elements, and randomly obtains prizes through jquery code.

2017-01-18 comment 0 1726

Can thinkphp make an app?

Course Introduction：ThinkPHP is an open source PHP development framework that is loved by developers for its simplicity, ease of learning, efficiency and speed. So, can it be used to develop apps? The answer is yes. The ThinkPHP framework is developed based on the MVC model and has a very complete routing mechanism and template engine. Therefore, it can well support the development of mobile apps. We know that mobile apps are generally divided into two parts: front-end and back-end. The front-end needs to use HTML5, CSS3 and other technologies to achieve dynamic interactive effects, while the back-end is mainly responsible for data.

2023-04-13 comment 0 663

Detailed introduction to the advantages of HTML5

Course Introduction：For users, HTML5 improves the user experience and enhances the visual experience. On the mobile side, HTML5 technology can return applications to web pages and expand the functions of web pages. Users can watch videos and play games without downloading clients or plug-ins. The operation is simpler and the user experience is better. The new video and audio technology of HTML5 solves the problem of flash support on mobile terminals Apple and Android 4.0+. In terms of video and audio, the performance is better than flash. In terms of web page performance, the intervention of CSS3 special effects styles, Canvas, and webgl in HTML5 not only enhances the visual effects of web pages, but even enables users to see three-dimensional special effects on web pages.

2017-03-20 comment 0 2194

How to solve the problem of double-click event failure in vue tablet mode

Course Introduction：When developing mobile applications using Vue, we often encounter the need to support tablet mode. In tablet mode, it is often necessary to implement a double-click event to achieve some interactive effects. During the actual development process, the author also encountered the problem of double-click event failure in Vue tablet mode. I will share my solution ideas below. 1. Problem Analysis In mobile terminal development, we often need to use double-click events to achieve some specific interactive effects. This is no exception in Vue. We can use the vue-touch library to implement double-click events.

2023-04-13 comment 0 1435

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