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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11328

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 17632

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 11341

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 Bitcoin floating loss mean? What is the difference between floating losses and floating profits in Bitcoin?

Course Introduction：One of the fundamental reasons for losing money in Bitcoin trading is the fear of floating losses. In fact, more than one professional in the Bitcoin market has said that forgetting about costs, and there is also a lot of research data that shows that obsessing about the cost of Bitcoin will have negative consequences. Investment brings many adverse effects. However, no matter how much investment experience people have, they will be affected by the cost price invisibly. People who have not been baptized by the market are even more deeply involved. Do you understand what the floating loss of Bitcoin means? Only then can we have a clearer understanding of what we need to pay attention to when trading Bitcoin. Simply put, the floating loss of Bitcoin is the loss before the current market value of Bitcoin is lower than the purchase value and it is not sold. Next, the editor will tell you in detail. What does Bitcoin floating loss mean? Bitcoin losses occur when you purchase Bitcoin or other cryptocurrencies

2024-02-26 comment 0 761

Float vs. Inline-Block: Which is the Better Choice for Modern Web Layouts?

Course Introduction：Float vs. Inline-Block: The Battle for Web LayoutIn the realm of web design, debate rages over the use of floats for layout. While floats have...

2024-12-10 comment 0 874

What is CYS?

Course Introduction：The CYS indicator refers to the market profit and loss indicator. This indicator can reveal the floating profits or losses of short-term investors who enter the market within a specified trading day. For example, if CYS is 13%, it means that the average floating profit of buying the stock is 13%. If If CYS is negative, it means there is a loss.

2020-06-17 comment 0 10150

What are the differences between currency options trading and contract trading?

Course Introduction：Options trading gives the holder the right to buy or sell an asset before a specific date, while contract trading imposes the obligation to buy or sell. The main differences are rights and obligations, margin requirements, profit and loss potential, risks and trading methods. Options offer limited profit and loss potential and lower risk, while contracts have higher profit and loss potential and risk. Traders should choose the appropriate trade type based on their risk tolerance and goals.

2024-08-07 comment 0 367

The difference between / and // in Python

Course Introduction：The difference between "/" and "//" in Python: "/" in Python represents floating-point division and returns a floating-point result, that is, the result is a floating-point number, while "//" represents integer division in Python and returns no The largest integer greater than the result means that the division result is rounded down.

2020-06-02 comment 0 76644

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