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Self-study IT network Linux load balancing video tutorial

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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.

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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.

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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 uniapp application implements shopping cart and order settlement

Course Introduction：How to implement shopping cart and order settlement in uniapp application 1. Shopping cart function implementation Shopping cart is one of the common functions in e-commerce applications. It is used to record the products purchased by users, making it convenient for users to view, edit and settle at any time. Page Design First, we need to design the layout of the shopping cart page. It can be designed as follows: 1) Top navigation bar: Displays the shopping cart title and back button. 2) Shopping cart list: Displays product information purchased by the user, including product pictures, names, prices, quantities, subtotals, etc. Every product is ok

2023-10-24 comment 0 1606

How to create a responsive marketplace display page layout using HTML and CSS

Course Introduction：How to create a responsive market display page layout using HTML and CSS. The market display page is an important part of an e-commerce website. It attracts users' attention and prompts them to make purchases by displaying goods and services. In today's mobile Internet era, more and more users access web pages through mobile phones and tablets, so it is necessary to create a responsive layout for the market display page to adapt to different screen sizes. This article will introduce how to use HTML and CSS to create a responsive market display page layout, and provide specific code examples

2023-10-16 comment 0 1523

An example explains how to use php to implement a product shopping cart adding function

Course Introduction：PHP realizes the function of adding products to the shopping cart. With the popularity of online shopping, the function of the product shopping cart has also become an indispensable part of the shopping website. In order to facilitate the user's shopping process, the website needs to provide users with a shopping cart system so that users can easily add and manage the items in their shopping carts. This article will introduce how to use PHP to implement a simple product shopping cart adding function. 1. Create database and tables. First, you need to create a database and corresponding tables to store user shopping cart data. In MySQL, you can use the following code to create

2023-04-13 comment 0 929

Detailed explanation of the application cases of CSS Flex elastic layout in e-commerce websites

Course Introduction：Detailed explanation of the application case of CSSFlex elastic layout in e-commerce websites Introduction: In the development of today's Internet, e-commerce websites have become one of the main channels for people to shop. In order to attract users, it is very important to provide a good user experience. In e-commerce websites, layout plays a crucial role in the overall effect of the page and user experience. As a new generation layout method, CSSFlex elastic layout has the advantages of responsive layout, adaptive width and simplified layout code. It is gradually being widely used in e-commerce.

2023-09-26 comment 0 1364

How to use the PHP Developer City function: add products to the shopping cart

Course Introduction：How to use PHP to develop mall functions: Add products to shopping cart Today’s e-commerce industry is booming, and more and more companies choose to open malls on the Internet. When building a practical and stable shopping mall platform, adding products to the shopping cart is a very basic and important function. This article will introduce how to use the function of adding products to the shopping cart in the PHP developer mall function, and provide corresponding code examples. Create a shopping cart table First, we need to create a shopping cart table in the database to save the product information added to the shopping cart by the user. Shopping

2023-07-29 comment 0 1630

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