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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 11346

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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jQuery plug-in slick implements responsive mobile slideshow image switching effects_jquery

Course Introduction：The jQuery plug-in slick is a responsive, slideable jQuery slideshow plug-in suitable for mobile device touch screens. This slideshow plug-in can set a variety of display effects and can play automatically. It is a mobile-first jQuery slideshow plug-in.

2016-05-16 comment 0 1295

OPPO announces new animation effects for ColorOS 14: over 100 upgrades, covering unlocking, wallpapers, and communication center

Course Introduction：According to news on April 29, OPPO today announced new animation content for the ColorOS14 system, covering lock screen, desktop, communication center, multi-tasking, large folders and other scenes, completing more than 100 animation upgrades. The details and demonstration of the animation are as follows: The visual upgrade has a new unlocking effect. When the user unlocks and enters the desktop, icons and cards fly in in layers, providing a "smoother and smoother experience." Wallpaper zoom animation When users swipe up from the bottom of the screen to exit the app, the wallpaper zoom animation will be "more smooth and coherent." After the upgrade of the communication control center, the dynamic effect of the pull-down communication center is more obvious, a Gaussian blur effect is added to the background, and the overall layout is more hierarchical and the information is more intuitive. The exit of the dynamic effect upgrade application interrupts the startup and exit of the dynamic application. The switching response is fast, the control is connected, and the response is as fast as the hand speed.

2024-04-29 comment 0 499

CSS Positions layout and mobile web development skills

Course Introduction：CSSPositions layout and mobile web development skills. Developing web pages on mobile devices requires taking into account the screen size and touch operations, so the layout and style of the web page require some special processing. CSSPositions is a commonly used layout method that can help us achieve some flexible effects in mobile development. This article will introduce the basic concepts and usage of CSSPositions and provide some practical code examples. 1. Overview of CSSPositionsC

2023-09-29 comment 0 1249

How to customize touchpad gestures in Ubuntu 16.04 system?

Course Introduction：Linux supports multi-touch. Do you want to have various gestures like MacOS? I’ve never used a Mac, well I haven’t used /qiong either. Come DIY with me. Fusuma is an open source project hanging on github. Fusuma originates from Japanese and originally refers to this kind of door (see picture). Okay, without further ado, first, let’s list the touchpad gestures that come with Linux. One-finger click is not mentioned. Two-finger slide up and down, scroll up and down. Two-finger slide left and right, scroll left and right. Two-finger click is equivalent to a three-finger double-click with the right mouse button ( Clicking has no effect) Switch the window by clicking with four fingers, which is equivalent to super2, ctrl+Alt+T, open the terminal, and enter sudoapt-getinstalllibinput-tool

2024-01-07 comment 0 967

KTC launches 'Xixin Screen Youth Edition A32Q5S' best friend phone: built-in battery, 32-inch 4K paper-like screen, initial price of 2,999 yuan

Course Introduction：According to news from this website on March 7, KTC launched a new 32-inch mobile screen A32Q5S, which belongs to the category of "girlfriend phone". The product is currently on pre-sale, with an official price of 3,499 yuan. Participating in the pre-sale "pay 50 yuan to get 500 yuan" activity, you can get 2,999 yuan. After checking the product details on this site, we learned that KTC Xpress Screen is divided into three versions: Youth Edition (this product A32Q5S), Standard Edition and Pro Edition. The whole series uses a 31.5-inch 4K display. The screen is made of AG frosted glass and has class Paper display effect, SRGB color gamut reaches 100% coverage, and contrast ratio reaches 3000:1. It should be noted that compared with other versions, the Youth Edition has made trade-offs in screen touch functions and only supports remote control and keyboard and mouse operations. KTC Xpress

2024-03-08 comment 0 1025

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