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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11279

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 17603

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 11314

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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Using jwt-go library to implement JWT Token verification and authentication in Go language

Course Introduction：Using jwt-go library to implement JWTToken authentication in Go language JWT (JSONWebToken) is a lightweight authentication and authorization method that can help us transfer safe and trustworthy information between users and systems based on JSON format. In the process of constructing JWTToken, we need to sign the Payload, which also means that when we parse the Token on the server side, we can verify its legitimacy. In Go language we can

2024-01-22 comment 0 1272

Detailed introduction to code sharing using xsd to verify xml

Course Introduction：XML Schemas Definition XML Schema is a replacement for DTD. XML Schema language is also XSD. XML Schema describes the structure of an XML document. You can use a specified XML Schema to validate an XML document to check whether the XML document meets its requirements.

2017-03-23 comment 0 2230

Implement verification code without GD library_PHP tutorial

Course Introduction：Implement verification code without GD library. How to implement verification code without GD library?php (as the current mainstream development language) //+-------------------------- ----------------------- //| * File validate_image.php (as the current

2016-07-13 comment 0 954

How to use regular expressions to verify email format in Go language

Course Introduction：The method of using regular expressions to verify email format in Go language. In daily program development, it often involves format verification of the email entered by the user to ensure the validity and security of the data. The Go language provides a powerful regular expression library that can easily verify email formats. This article will introduce in detail how to use regular expressions for email format verification in Go language, and provide corresponding code examples. First, we need to import the regular expression library regexp of the Go language. Before using it, you first need to pass

2023-07-13 comment 0 1622

js regular expression to verify email address_javascript skills

Course Introduction：This article mainly introduces js regular expressions to verify email addresses. It uses JavaScript language to implement the email address verification program. It uses the regular expression library of JavaScript language. Interested friends can refer to it.

2016-05-16 comment 0 1274

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