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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.

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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.

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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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Keyword ranking optimization

Course Introduction：Common keyword ranking optimization techniques include: 1. Analyze user search behavior and competitors’ situations to determine keywords suitable for the website; 2. Write high-quality, valuable and original content, and optimize titles, descriptions, tags and other elements; 3. Obtain high-quality external links to improve the authority and credibility of the website; 4. Ensure that the website has good mobile responsive design and fast loading speed; 5. Promote the website and content through social media platforms to increase the website’s exposure and flow.

2024-01-22 comment 0 1166

How to identify real and fake cosmetics (protect your skin and health)

Course Introduction：In modern society, cosmetics have become an indispensable part of many people's daily lives. However, the market is flooded with counterfeit cosmetics that can cause serious harm to our skin and health. It is especially important to learn to distinguish between real and fake cosmetics. This article will introduce you to some simple and practical methods to help you identify real and fake cosmetics to protect our skin and health. How to distinguish real and fake cosmetics With the prosperity of the cosmetics market, fake and shoddy products are also emerging in endlessly. Buying real cosmetics is essential to protect your skin and health. This article will introduce in detail the methods and techniques for identifying authentic and fake cosmetics to help readers avoid buying fakes. Observe packaging design and quality: Authentic products usually have high-quality packaging with clear printing, bright colors, and no blemishes

2024-09-02 comment 0 413

Samsung releases ViewFinity S9, a 5K professional monitor, leading a new era of high-quality visuals

Course Introduction：According to news on June 29, Samsung’s official website officially launched its first 5K resolution professional display Samsung ViewFinityS9. This product made its debut at the CES2023 exhibition at the beginning of this year. After half a year of anticipation, consumers can finally purchase this high-performance monitor through Samsung’s official website. It is understood that Samsung ViewFinityS9 is a product comparable to Apple Studio Display. It uses a 27-inch IPS screen with a resolution of 5120*2880, a screen ratio of 16:9, and supports a 60Hz refresh rate. The display has excellent picture quality performance, with a high brightness of 600 nits, a contrast ratio of 1000:1 and a response time of 5ms (GTG)

2023-06-29 comment 0 1179

What are the fixes for PrestaShop website vulnerabilities?

Course Introduction：There are more and more loopholes in the PrestaShop website. The website system is an open source system used by many foreign trade websites. From the previous initial version 1.0 to the current version 1.7, it has gone through many upgrades, and more and more people are using the system. There are many domestic foreign trade companies using this system. PrestaShop has high scalability, many templates, free switching of multiple currencies, and supports credit card and Paypal payment. It is the first choice for foreign trade websites. Just in the past few days, it was revealed that PrestaShop has a remote code injection vulnerability. This vulnerability has a relatively small scope of impact and is relatively harmful. It can upload a webshell to the root directory of the website. On November 7, 2018, PrestaShop officially released the latest

2023-05-12 comment 0 1663

Five Key Tips to Improve Website Performance: Use these methods to make your website flow smoothly!

Course Introduction：Five magic weapons for website performance optimization: Unlock these ways to make your website as smooth as the wind! With the rapid development of the Internet, people have higher and higher requirements for website access speed and user experience. Once a website loads slowly or takes too long to respond, users are likely to give up and switch to a competitor's website. Therefore, website performance optimization has become a crucial link. Website performance optimization aims to improve the speed, stability and efficiency of the website to ensure that users can get the information they need in the shortest possible time. Nothing beats a quick response

2024-02-03 comment 0 764

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