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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11338

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 17642

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 11352

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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CSS3 code to implement dynamic background login box_form effects

Course Introduction：This article introduces a dynamic background login box special effect with animated effects based on jQuery CSS3. Friends who need it can refer to it.

2016-05-16 comment 0 1682

An overview of the new features of CSS3: How to use CSS3 to implement background images

Course Introduction：Overview of the new features of CSS3: How to use CSS3 to implement background images Introduction: In recent years, CSS3 has become an indispensable part of front-end development. It introduces many new features, allowing developers to achieve more beautiful and dynamic web design. This article will introduce an important function in CSS3: how to use CSS3 to implement background images, and give corresponding code examples. 1. Basic syntax for using background images. In CSS3, there are two basic syntaxes for setting background images for elements, namely backgroun.

2023-09-09 comment 0 1010

CSS realizes background dynamic gradient effect

Course Introduction：This article mainly introduces the dynamic gradient effect of background using css3. This article introduces it to you in great detail through example code and has certain reference value. Friends in need can refer to it.

2020-06-04 comment 0 2613

Java implements dynamic picture verification code

Course Introduction：This article is recommended by the Java introductory tutorial column. It introduces in detail how to implement dynamic image verification codes. I hope it can help you. Generating a verification code image generally requires the following steps: 1. Define the width and height; 2. Draw the background and border; 3. Create a random character set and random number object; 4. Draw the verification code characters; 5. Draw interference lines.

2020-01-09 comment 0 2619

How can the Java framework be customized for different business needs?

Course Introduction：Customized Java frameworks can meet diverse business needs. Principles include modular design, extension points, configurability, reflection, and dynamic proxies. This article takes the SpringBoot application as an example to show how to customize the login mechanism, support additional authentication methods, and achieve the purpose of customizing the framework behavior without changing the framework code.

2024-06-02 comment 0 1019

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