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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 are the structural components of a magnetic pump?

Course Introduction：The structural components of the magnetic pump are: 1. Pump body, which is used to accommodate other components and form the fluid channel of the pump; 2. Bearings, which provide support and balance for rotational motion; 3. Magnetic drive, which transmits the rotational force of the motor to the pump The rotor; 4. Stationary ring and rotating ring, components of the magnetic coupler; 5. Pump rotor, which increases the kinetic energy of the fluid and pushes the fluid through the pump; 6. Pump blades, which suck the fluid from the low-pressure area and increase its pressure After discharge; 7. The pump shaft transmits the rotational force of the magnetic coupler; 8. The sealing device prevents fluid leakage inside and outside the pump.

2023-08-22 comment 0 5535

How does a magnetic pump work?

Course Introduction：The working principle of the magnetic pump is based on the principle of magnetic coupling: 1. When the motor starts, the external magnet starts to rotate, generating a rotating magnetic field; 2. The rotating magnetic field of the external magnet interacts with the internal magnet to form a magnetic coupling and the driving force is transmitted to the internal magnet. ;3. When the driving force is transmitted to the internal magnet, it acts on the impeller. The impeller then begins to rotate, sucking the liquid in from the inlet and pushing it out to the outlet through centrifugal force.

2023-09-01 comment 0 4886

What is the Magnet Dog website? -How to use magnetic dog

Course Introduction：Magnet Dog is a magnet link search engine that can quickly search for magnet link resources across the entire web. Users can search by keywords to quickly find the magnet links for the movies, TV series, music, software, games and other resources they need, and download them through the magnet links. Next, let the editor introduce you to the Magnet Dog website and Magnet Dog. How to use it! 1. Magnetic Dog Website Magnet Dog is a clean and easy-to-use search engine for magnetic links and network disk resources. Through in-depth mining and sorting of resources such as magnetic links and Baidu network disk, we can obtain resource information more quickly and equally. The interface logo style of the official website of Magnet Dog is similar to that of the official website of Magnet Cat. Its powerful search function aggregates film and television resources across the entire network, and provides all seed links at once, making intelligent search easy.

2024-03-18 comment 0 1012

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