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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11330

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 11347

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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jQuery realizes the floating layer plug-in that pops up the closeable layer by clicking the button_jquery

Course Introduction：This article mainly introduces jQuery's floating layer plug-in that allows you to click a button to pop up a closeable layer. It has the effect of clicking a floating layer with a mask layer, and the floating layer can be dragged and closed. Friends in need can refer to the following

2016-05-16 comment 0 1319

JavaScript method to pop up a transparent floating layer after clicking the button

Course Introduction：This article mainly introduces the method of using JavaScript to pop up a transparent floating layer after clicking a button. It can achieve the effect of popping up a centered transparent floating layer when clicking a button. It involves related techniques for JavaScript to operate mouse events and page styles. Friends in need can refer to the following

2016-05-16 comment 0 1106

jQuery: Solving the problem that the mouseleave event cannot be triggered when the mouse moves quickly

Course Introduction：Since the page element is a dynamically generated div, the mouseenter and mouseleave events are registered for it, so that when the mouse is moved in, a floating layer will pop up to display the details, and it will be hidden after the mouse is moved out. However, when the mouse is quickly slid, the mouseleave event is not triggered. , the pop-up floating layer has always been there. I am very confused about how to deal with it. Please give me some guidance.

2018-05-15 comment 0 3438

How to implement pop-up layers and modal boxes in Vue?

Course Introduction：Vue is a JavaScript-based front-end framework that provides many convenient tools and components for building single-page application (SPA) interfaces and user interactions. Among them, pop-up layer (modal) and modal box (popover) are common UI components, which can also be easily implemented in Vue. This article will introduce how to implement pop-up layers and modal boxes in Vue. 1. Pop-up layer Pop-up layer is generally used to prompt messages, display menus or operation panels, and usually needs to cover the entire page or part of the area. Vue

2023-06-25 comment 0 1382

How to add logo to pictures in PS_Just a few simple steps

Course Introduction：First you need to import your original image and logo into PS. Note that the background of your watermark here is recommended to be transparent. If it is a white background, it is recommended to use the [Magic Wand] tool to remove the white background first. Please follow the steps below: 1. Open the layer we are using, right-click [Copy Layer], and in the pop-up dialog box [Target]-[Document] select the file name you want to add a watermark to. 2. After clicking [Copy Complete], you will see the copied layer in the layer panel. Apply the document you need to watermark on this layer. 3. Select you in the layers panel and the logo will be stamped on your picture, but it is very ugly. This time you need a little operation. First, we set the [Layer Properties] of the watermark layer.

2024-06-01 comment 0 476

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