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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11302

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 17615

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 11321

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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Making a digital clock based on Jquery and CSS3 with source code download (CSS3)_jquery

Course Introduction：Digital clocks are used in web countdown, web alarm clock effects and web apps based on HTML5. This article introduces to you how to make a digital clock based on jquery and css3 with source code download. Interested friends can take a look.

2016-05-16 comment 0 1178

Making a digital clock based on jQuery and CSS3 with source code download (jquery)_jquery

Course Introduction：This article is based on jquery to make the digital clock really run, and implement a web version of the digital clock with the date and day of the week. The effect is very realistic. Friends who are interested should take a look.

2016-05-16 comment 0 1443

The unit of channel transmission rate in data communication is bps. What does it represent?

Course Introduction：The unit of channel transmission rate in data communication is bps, which means "bits/second" or "bits/second". That is, the data transmission rate is numerically equal to the number of binary bits that constitute the data code transmitted per second, also called "bit rate". ". The bit rate represents the number of bits transmitted per unit time and is used to measure the transmission speed of digital information; based on the number of bits occupied by each frame of image storage and the transmission bit rate, the speed of digital image information transmission can be calculated.

2021-01-18 comment 0 30863

What does audio bit rate mean?

Course Introduction：The audio bit rate refers to the bit rate; the bit rate in audio refers to the amount of binary data per unit time after converting the analog sound signal into a digital sound signal. It is an indirect measure of audio quality. The binary data per unit time The higher the bit rate, the better the sound quality.

2022-08-23 comment 0 20187

What is the number of bits of binary data that a computer can directly process at one time?

Course Introduction：When a computer processes data, the number of bits of binary data that can be directly processed at one time is called the word length. The word length refers to the number of bits of binary data that the computer can directly process at one time. The longer the word length, the stronger the overall performance of the computer.

2020-08-20 comment 0 45916

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