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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11340

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 17646

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 11353

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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The software system consists of several parts

Course Introduction：The software system consists of three parts, namely system software, support software and application software. It is the software part of the computer system.

2020-12-29 comment 0 34994

What is the software system that supports various database operations?

Course Introduction：The software system that supports various operations of the database is the database management system; the database management system is a large-scale software that manipulates and manages the database and is used to establish, use and maintain the database. It provides unified management and control of the database to ensure the security and integrity of the database.

2020-04-15 comment 0 8191

Does a computer system consist of a hardware system and a software system?

Course Introduction：A complete computer system consists of two parts: a hardware system and a software system. The hardware system mainly consists of central processing unit, memory, input and output control system and various external devices. Software is divided into system software, support software and application software.

2019-07-25 comment 0 33178

How to use modules, extension libraries and frameworks in Python to develop a complete software system

Course Introduction：How to use modules, extension libraries and frameworks in Python to develop a complete software system. As a high-level programming language, Python is very suitable for developing various software systems. By using Python's modules, extension libraries, and frameworks, developers can quickly build powerful, reliable and stable software systems. This article will introduce how to use modules, extension libraries and frameworks in Python to develop a complete software system, and provide specific code examples. First, let’s introduce some commonly used Python modules

2023-10-18 comment 0 864

What two parts does a software system consist of?

Course Introduction：Computer software system is composed of two parts: "system software" and "application software". System software refers to a type of computer software responsible for controlling and coordinating computers and their peripheral devices, and supporting the development and operation of application software; application software refers to a type of software developed for specific fields and serving specific purposes.

2020-03-14 comment 0 43746

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