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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11258

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 17586

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 11301

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 parts does a microcomputer hardware system consist of?

Course Introduction：The hardware system of a microcomputer consists of four parts: arithmetic unit, controller, memory (including memory, external memory and cache) and various input and output devices. A complete microcomputer system consists of two parts: hardware system and software system.

2020-12-01 comment 0 57148

Is the operating system a computer hardware system?

Course Introduction：The operating system does not belong to the hardware system of the computer. The operating system is the most basic and important basic system software in the computer. The hardware system refers to the physical equipment that constitutes the computer, that is, it is composed of mechanical, optical, electrical, and magnetic devices with computing capabilities. , physical components that control, store, input and output functions.

2020-05-14 comment 0 10907

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 33152

What does a computer hardware system mainly include?

Course Introduction：The computer hardware system mainly includes: 1. Central processing unit, which includes arithmetic units and controllers; 2. Internal memory, namely RAM and ROM; 3. Input devices, mainly keyboards, mice, microphones, etc.; 4. , Output devices, mainly monitors, speakers, printers, etc.; 5. External memory, also known as hard disk.

2022-07-19 comment 0 61061

What are the basic parts that make up a computer hardware system?

Course Introduction：The basic parts of a computer hardware system are: host and input/output devices. The hardware system refers to the physical equipment that constitutes the computer, that is, the physical components composed of mechanical, optical, electrical, and magnetic devices with computing, control, storage, input, and output functions. The computer hardware mainly includes: CPU, memory, output devices and input devices; the CPU and memory are collectively called the host.

2020-12-10 comment 0 44176

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