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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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Code to implement simple tabs plug-in function in jquery_jquery

Course Introduction：jquery has changed the way programmers write javascript. As a jquery enthusiast and novice, I recently learned to use a few jquery codes to implement functions similar to tabs plug-ins. I believe this article can bring some help to many jquery enthusiasts who are just getting started and friends who want to implement tabs plug-in functions.

2016-05-16 comment 0 1123

How to implement camera taking function in uniapp

Course Introduction：How to implement the camera function in uniapp. Nowadays, mobile phones are becoming more and more powerful, and almost every mobile phone is equipped with a high-pixel camera. Implementing the camera photography function in UniApp can add more interactivity and richness to your application. This article will focus on UniApp, introduce how to use the uni-app plug-in to implement the camera taking function, and provide code examples for reference. 1. Install the uni-app plug-in. First, we need to install a uni-app plug-in, which can be easily installed in u

2023-07-04 comment 0 9265

Can jquery only be written in HTML?

Course Introduction：jQuery is a popular Javascript library that helps websites or applications achieve dynamic effects and interactive features. Compared with native Javascript, jQuery syntax is simpler and easier to understand, and there are many ready-made plug-ins available. Many people who have just started learning jQuery will think that jQuery can only be written in HTML. This view is wrong. In fact, jQuery's code can be written in a file with Javascript functionality, such as a JavaScript file or PH

2023-04-17 comment 0 681

Why use slots in vue

Course Introduction：The reasons for using slots in Vue are: Component reusability: allowing the same component to be reused in multiple components to render different content. Flexible layout: Developers can customize content layout and create complex and dynamic user interfaces. Code separation: Separate content presentation from component logic to improve code manageability. Extensibility: Easily add or overwrite slots to expand component functionality. Highly customizable: Developers can dynamically modify component behavior and appearance. Responsive design: Supports content to dynamically adjust according to available space, enabling responsive applications.

2024-05-07 comment 0 447

What are the advantages and disadvantages of jquery

Course Introduction：The advantages and disadvantages of jQuery are: 1. Advantages: It realizes the separation of scripts and pages, the code is flexible and clear, the least code can do more things, it has high performance, is widely supported in the industry, has many plug-ins and forms an ecosystem, and it is easy to get started and saves learning time , making JavaScript programming more interesting; 2. Disadvantages: It is not backward compatible and has poor plug-in compatibility, which affects the completed code, requires manual modification of plug-ins or conflicts between multiple plug-ins, poor version release strategy, and core code in large frameworks Support for animation and special effects is also relatively poor.

2023-05-25 comment 0 2899

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