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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11332

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 17635

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 11348

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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How to clear browser cache in php?

Course Introduction：PHP uses "header("Last-Modified:".gmdate( "D,d M Y H:i:s") . "GMT");header("Cache-Control:no-cache,must-revalidate");" clear cache.

2020-08-21 comment 0 4158

What to do if there are too many wrong passwords in phpcms

Course Introduction：Solution to too many incorrect passwords in phpcms: first open the "index.php" file; then comment out the code "if($rtime['times'] >= $maxloginfailedtimes){$minute}"; finally update the entire site Just cache.

2020-01-08 comment 0 2384

How to delete route cache in laravel

Course Introduction：How to delete the route cache in laravel: 1. Log in to the system running the laravel application and open the terminal; 2. Navigate to the Laravel project directory; 3. Execute the "php artisan route:clear" command to clear the route cache.

2021-09-24 comment 0 3949

The picture verification code developed by PHP fails to display

Course Introduction：The solution to the failure of the image verification code developed by PHP: first install the gd module by modifying the php.ini file, then modify the program code to a BOM-free format, and finally use "ob_clean()" to clear the cache.

2019-11-18 comment 0 2103

Introduction to java caching technology

Course Introduction：Cache is a special memory subsystem of cache memory, in which frequently used data is copied to facilitate quick access. 2. Any hardware/software with a large speed difference is used to coordinate the data transmission speed of the two. Different structures can be called Cache

2017-02-06 comment 0 1327

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