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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11360

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 17663

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 11377

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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C# development suggestions: Optimize network communication and data transmission

Course Introduction：C# development suggestions: Optimize network communication and data transmission. With the rapid development of Internet technology, network communication and data transmission play a vital role in various fields. In C# development, optimizing network communication and data transmission is the key to improving system performance and ensuring data security. This article will introduce some C# development suggestions to help developers optimize network communication and data transmission. 1. Choose the appropriate network communication protocol In C# development, choosing the appropriate network communication protocol is crucial to optimizing network communication and data transmission. Common network communications

2023-11-22 comment 0 1601

C# development suggestions: optimize database access and data processing

Course Introduction：C# development suggestions: Optimize database access and data processing In modern software development, database access and data processing are an indispensable part. Especially in C# development, optimizing database access and data processing is the key to improving software performance and user experience. This article will discuss database access and data processing optimization in C# development, and provide developers with better guidance and suggestions. 1. Use appropriate database access technology. In C# development, common database access technologies include ADO.NET, EntityFr

2023-11-22 comment 0 1080

C# development suggestions: performance optimization and resource management

Course Introduction：C# development suggestions: Performance optimization and resource management In C# development, performance optimization and resource management are crucial aspects. Good performance and resource management can improve the operating efficiency of applications, reduce resource waste, and improve user experience. This article will discuss and make suggestions for performance optimization and resource management in C# development. Use appropriate data types In C# development, choosing the appropriate data type is crucial for performance optimization. For integer types, appropriate data types should be selected based on specific needs to avoid using overly large data types.

2023-11-22 comment 0 1423

Development suggestions: How to manage permissions in ThinkPHP applications

Course Introduction：Development suggestions: How to perform permission management for ThinkPHP applications. With the rapid development of the Internet and information technology, more and more applications require permission management to protect the security and privacy of user data. ThinkPHP is an excellent framework developed based on PHP, which is flexible, efficient, and safe. Therefore, when developing ThinkPHP applications, reasonable permission management is an important link that cannot be ignored. This article will introduce how to implement ThinkPHP from three aspects: idea, implementation and precautions.

2023-11-22 comment 0 1328

Development suggestions: How to use the ThinkPHP framework for RBAC permission management

Course Introduction："Development Suggestions for Using the ThinkPHP Framework for RBAC Permission Management" With the development of the Internet, more and more Web applications need to implement permission management functions to ensure the security and controllability of the system. RBAC (Role-BasedAccessControl, role-based access control), as a mature permission management model, has been widely used in actual development. ThinkPHP is a popular PHP framework that provides rich functions and flexible extensions.

2023-11-22 comment 0 1137

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