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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11357

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 17659

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 11370

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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Problem: Images load too slowly

I made a craiglist-like website using Html, Css, Js, and Php. When the user clicks to upload an image larger than 1mb, the page becomes very slow or fails (503 error). There is no problem with images smaller than 100kb. There is a form on a php page with type=file input tag and preview img tag. >No problem here. When the user clicks the submit button, the form passes the value of the input tag to another php page, which contains the upload code. Question: Best image scaling before uploading to server

2023-08-17 22:40:08

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

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How to handle image preview and zoom issues in Vue components

Course Introduction：How to handle image preview and zoom issues in Vue components requires specific code examples. Introduction: In modern web applications, image preview and zoom are very common requirements. As a popular front-end framework, Vue provides us with many powerful tools to deal with these problems. This article will introduce how to handle image preview and zoom in Vue components, and provide specific code examples. 1. Image preview: Image preview means that when the user clicks or hovers over the image, it can display a large version of the image or enlarge it in a specific area.

2023-10-09 comment 0 1704

How to use CSS to achieve the zoom effect of images

Course Introduction：How to use CSS to achieve the zoom effect of images In web design, the zoom effect of images is one of the common requirements. Through the related properties and techniques of CSS, we can easily achieve the zoom effect of images. Below, we will introduce in detail how to use CSS to achieve the zoom effect of images, and give specific code examples. Use the transform attribute to implement matrix scaling of images. The transform attribute allows us to transform elements by rotating, scaling, tilting or translating them. Among them, the scaling transformation is to realize the picture

2023-11-21 comment 0 1916

Use uniapp to implement image zooming and zooming functions

Course Introduction：Using uniapp to implement image zoom-in and zoom-out functions In mobile application development, image display and operation is a common requirement. This article will introduce how to use uniapp to realize the image zoom function. uniapp is a cross-platform application framework based on Vue.js, which can generate both Android and iOS applications through a set of codes. In uniapp, we can use the uni-image component to display and operate images. First, create a page in the project to display images.

2023-11-21 comment 0 1607

2014 NVIDIA graphics card series ranking

Course Introduction：2014 NVIDIA graphics card series ranking I have compiled four latest hardware ladder charts, including Intel's latest monster i7, and NVIDIA's latest mobile and desktop graphics cards 980 and 970. These four ladder pictures are the CPU and graphics cards of the mobile version and the desktop version respectively, a total of four pictures. Among them, NVIDIA graphics card, the representative color is green, see the picture for details. Intel has a CPU ladder chart and a core graphics card ladder chart. The representative color is blue and the classification is clear. If you have any questions, please ask. The uploaded image may be compressed. If you need the original image, please download the attachment at the bottom. I have compressed and packed the four images into one attachment. It is recommended that you use a tablet or desktop computer to view it, as it may be inconvenient to download attachments on your mobile phone. Put preview image

2024-01-10 comment 0 1277

How to use the picture preview plug-in in uniapp to realize the picture enlargement viewing function

Course Introduction：How to use the picture preview plug-in in uniapp to realize the picture enlargement viewing function. Specific code examples are required. With the popularity of mobile devices, pictures play an increasingly important role in our daily lives. When developing mobile applications, how to implement image enlargement viewing function has become a common requirement. Using the uniapp framework can implement such functions more quickly and is compatible with multiple platforms. In uniapp, you can use third-party plug-ins to realize the image enlargement and viewing function. The most commonly used plug-in is uni-

2023-10-20 comment 0 2111

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