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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11340

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 17646

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 11353

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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Build an online countdown app using JavaScript

Course Introduction：Using JavaScript to build an online countdown application In modern society, countdown applications are a very common function. It can be used to count down the end time of an activity, or as a reminder function to help users keep track of time. This article will introduce how to use JavaScript to build a simple and practical online countdown application. First, we need an HTML file to build our application interface. The following is a basic HTML structure, including a container to display a countdown and some basic styles. &

2023-08-09 comment 0 633

How to write a simple online countdown function through PHP

Course Introduction：How to write a simple online countdown function through PHP requires specific code examples. With the development of the Internet, the online countdown function is widely used in many websites, applications and activities. The countdown function allows users to clearly know how long it will take to reach a specific time point or event. This article will introduce how to use PHP to write a simple online countdown function and provide specific code examples. First, we need to clarify the target time of the countdown. Suppose we want to implement a countdown function with the target time in the future

2023-09-27 comment 0 1155

How to implement the countdown function in online answering questions

Course Introduction：How to implement the countdown function in online answering requires specific code examples. With the rapid development of the Internet and the popularization of smart devices, more and more educational activities have begun to move online, including online answering. As a new form of education, online quizzes can provide a more convenient and flexible learning method, and are favored by more and more users. One of the important functions is the countdown to complete the answer within the specified time. This article will introduce how to implement the countdown function in online answering questions and give specific code examples. Realize

2023-09-30 comment 0 1173

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