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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11329

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 11344

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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javascript - When displaying images on e-commerce website list pages, what methods are generally used to prevent image deformation?

Course Introduction：I would like to ask, on a product list page similar to that of e-commerce, how to prevent image deformation? Well, I looked at Tmall and JD.com and found that the original size ratio of the pictures is the same. Is it a unified rule for the size ratio of the pictures uploaded in the background?

2016-10-11 comment 0 1182

When displaying images on the list page of an e-commerce website, what methods are generally used to prevent image deformation?

Course Introduction：I would like to ask, how to prevent image deformation on a product list page similar to that of e-commerce? Well, I looked at Tmall and JD.com and found that the original size ratio of the pictures is the same. Is it a unified rule for the size ratio of the pictures uploaded in the background?

2016-10-10 comment 0 1294

Discuss the reasons and solutions for PHP images not being displayed

Course Introduction：With the development of the Internet, pictures play an increasingly important role in our daily lives. Whether it is social media, e-commerce platforms or personal blogs, pictures are one of the important elements that attract users' attention. In website development, PHP is often used to upload, process and display images. But sometimes we encounter the problem that pictures cannot be displayed normally. Let's discuss the reasons and solutions for why PHP pictures cannot be displayed. 1. Reasons why PHP images cannot be displayed 1. File path error When using PHP to display images, we need to specify

2023-04-25 comment 0 3067

Method to use PHP and Qiniu cloud storage interface to achieve special effects of pictures and personalized recommendations

Course Introduction：A method of using PHP and Qiniu cloud storage interface to achieve special effects and personalized recommendations for pictures. With the continuous development of Internet technology, pictures have become an indispensable part of social media, e-commerce and other fields. In order to make pictures more attractive and give users a better experience, we can use PHP and Qiniu Cloud Storage interface to achieve special effects and personalized recommendations for pictures. First, we need to prepare the development environment. Make sure you have installed PHP and have a Qiniu Cloud Storage account. Next, we need to introduce

2023-07-05 comment 0 1171

What are the characteristics of cross-border e-commerce?

Course Introduction：Characteristics of cross-border e-commerce: 1. Globality; due to the development trend of economic globalization, merchants rely on the Internet for cross-border sales, making cross-border sales also have global and decentralized characteristics. 2. Anonymity; cross-border e-commerce is global and decentralized, making it difficult to identify the buyer’s identity and specific geographical location. 3. Intangibility; data, images and sounds mainly exist in the form of data codes in the global network environment. 4. Immediacy. 5. Paperless; e-commerce mainly operates in a paperless manner. 6. Rapid evolution.

2021-01-22 comment 0 74358

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