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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11220

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 17564

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 11276

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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What functions does the Empire CMS template developer have?

Course Introduction：Empire cms template developer is a comprehensive tool that provides users with comprehensive template management and design functions: Template management: create, edit, preview, import and export templates. Design features: visual editor, drag-and-drop elements, advanced styling options, and mobile responsiveness. Other features: database connection, plug-in support, SEO optimization and team collaboration.

2024-04-17 comment 0 723

The impact of C++ language features on the application of design patterns

Course Introduction：The impact of features such as polymorphism, template programming and smart pointers in the C++ language on the application of design patterns include: Polymorphism: allows different types of objects in design patterns such as strategy pattern and abstract factory pattern to respond differently to the same call. Template programming: used to create a common event bus that handles different types of events (Observer pattern) and define an operation framework (Template Method pattern). Smart pointers: used to manage dynamically allocated memory in factory method mode and singleton mode.

2024-06-01 comment 0 1095

How to reasonably apply design patterns in PHP back-end function development?

Course Introduction：How to reasonably apply design patterns in PHP back-end function development? A design pattern is a proven solution template for solving a specific problem that can be used to build reusable code, improving maintainability and scalability during the development process. In PHP back-end function development, reasonable application of design patterns can help us better organize and manage code, improve code quality and development efficiency. This article will introduce commonly used design patterns and give corresponding PHP code examples. Singleton mode (Singleton) Singleton mode is suitable for those who need to maintain

2023-08-07 comment 0 593

Is Empire CMS a program or a template?

Course Introduction：Empire CMS is a content management system with programs and templates, consisting of program part and template part: 1. Program part, which refers to the background management interface and the background logic and database processing of various functional modules, and is responsible for realizing the core functions of the website; 2. , The template part refers to the design and display template of the front-end user interface, which is used to define the layout, style and interactive effect of the website.

2023-08-02 comment 0 912

What framework is layui?

Course Introduction：layui is a medium and large web interface solution for rapid development of web applications and websites. It adopts modular design, supports responsive layout, and provides rich UI components. It is widely used in backend management systems, website construction, and mobile terminals. Development and API development and other scenarios, the advantages include high development efficiency, performance optimization and simple maintenance.

2024-04-04 comment 0 591

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