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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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jQuery realizes the special effect of popping up the picture when the mouse slides over it_jquery

Course Introduction：Recently, a project encountered a need. The desired effect is that when the mouse is moved over the thumbnail, the large image of the image will be displayed, and the large image will follow the mouse movement; or the image can also be displayed when the mouse is moved to the prompt text. After some thinking, I used the following method to achieve this effect, and I will share it with you here.

2016-05-16 comment 0 1366

JQuery implements simple picture sliding switching effects_jquery

Course Introduction：An image display special effect code based on jQuery. When the mouse is moved over the image and hovers, it will automatically switch to a simple display of text. It is suitable for displaying picture collections and is recommended to everyone.

2016-05-16 comment 0 998

How to achieve Taobao magnifying glass effect in vue3

Course Introduction：Ideas for realizing the effect We need 4 steps to realize the effect of the Taobao magnifying glass in the animated picture. 1. Complete the layout of the small picture box, mask, and large picture box 2. Realize the movement of the mouse to the small picture box to display the mask and the large picture box 3. Realize the movement of the mask in the small picture box by moving the mouse 4. Realize the movement range of the mask It cannot exceed the small picture box, and when moving, it drives the large picture to move to complete the layout of the small picture box, mask, and large picture box. My layout is that the small picture box wraps the picture, mask, and large picture box. The thumbnail box is relatively positioned. Masks, large picture boxes, and large picture pictures are all absolutely positioned (large picture pictures cannot be moved without positioning). Mask needs to set transparency. As long as the effect can be achieved. Realize moving the mouse to the small picture box to display the mask and bind the large picture box to the small picture box mouseou

2023-05-19 comment 0 2041

When the mouse moves over the picture, follow the mouse to display the enlarged picture effect_jquery

Course Introduction：When the mouse moves over the picture, follow the mouse to display the enlarged picture. A screenshot of the specific effect is provided. The source code is also attached. Interested friends can learn from it.

2016-05-16 comment 0 1716

jquery realizes the advertising code for sliding large images to shrink into small banner images at regular intervals_jquery

Course Introduction：This article mainly introduces jquery's advertising code that enables the sliding screen of large images to be regularly shrunk into small banner images. It can achieve the gradual display effect and regular shrinking function of large advertising images. Clicking the close button in the upper left corner can also hide the advertising images, which is very practical. Value, friends in need can refer to it

2016-05-16 comment 0 1212

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