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Self-study IT network Linux load balancing video tutorial

Course Intermediate 10976

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 17039

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 10737

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 does a microcomputer host consist of?

Course Introduction：The host computer of a microcomputer consists of a central processing unit and internal memory. Microcomputer refers to a microcomputer system composed of a central processing unit (CPU) and peripheral components, and the main focus of a microcomputer system is the relationship between the central processor and memory; it is precisely because of the central processing unit of microcomputing The central processor and memory are the focus of microcomputer research, so the central processor and memory are separately called the host of the microprocessor.

2022-09-21 comment 0 22313

What does a microcomputer host include?

Course Introduction：The host computer of a microcomputer includes a microprocessor, internal memory, input and output interfaces, and buses. Microcomputer is a small electronic computer composed of large-scale integrated circuits. It is a bare machine based on a microprocessor and equipped with internal memory, input and output interface circuits and corresponding auxiliary circuits.

2020-12-01 comment 0 16504

What is the internal memory of a microcomputer?

Course Introduction：The internal memory of a microcomputer is "byte addressable". The internal memory of a microcomputer usually consists of 8 binary bits forming a storage unit, and each byte is assigned a number, that is, an address.

2020-08-22 comment 0 21644

What does 32 refer to in a 32-bit microcomputer?

Course Introduction：The 32 in a 32-bit microcomputer refers to the microcomputer's ability to process 32-bit binary numbers at the same time. Microcomputer refers to a microcomputer, which is a small electronic computer composed of large-scale integrated circuits. It has the characteristics of small size, high flexibility, and low price.

2020-12-29 comment 0 31268

What mainly determines the performance of a microcomputer?

Course Introduction：What mainly determines the performance of a microcomputer is the "CPU". To measure the performance of a computer, it can be evaluated with common technical indicators, such as number of bits, speed, capacity, bandwidth, etc.; among them, the component that mainly determines the performance of a microcomputer is the microprocessor; the microcomputer is It is a bare metal based on CPU, equipped with internal memory, input and output interface circuits and corresponding auxiliary circuits.

2020-12-03 comment 0 37943

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