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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11309

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 17619

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 11325

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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The State Post Bureau passed the draft of the industry standard 'Basic Requirements for Express Packaging of Fresh Foods'

Course Introduction：This website reported on August 2 that according to official disclosures from the "State Post Bureau", the State Post Bureau held a director's office meeting today to review and adopt in principle the draft industry standard for approval of the "Basic Requirements for Express Packaging of Fresh Foods". The meeting pointed out that in recent years, with the economic and social development and the continuous improvement of people's living standards, the demand for fresh food express delivery from farm to table has grown rapidly. Formulate the "Basic Requirements for Fresh Product Express Packaging" industry standard and scientifically standardize packaging to reduce problems such as deterioration, rot, and damage of fresh products during delivery, further ensure the quality of express delivery services, improve user experience, and promote the delivery business of fresh products. High-quality development is of great significance. This site has noticed that the first mandatory national standard for express packaging, "Limits of Heavy Metals and Specific Substances in Express Packaging", was released on June 1 this year.

2024-08-07 comment 0 948

JD.com is the first in the supermarket industry to offer guaranteed returns if you don't like food.

Course Introduction：Pets exchange food, consumers try new things... There will always be situations where pets don't like the food or don't suit their taste. Compared with the past, they could only give it away or even throw it away. The "return if you don't like it" service has undoubtedly become a "return" for people and their pets. The best choice for trying something new. In 2020, Jingdong Supermarket launched the "refund if you don't like food" service, aiming to help pet owners solve the problem of replacing pets with new food if they don't like to eat, and reduce the resulting waste. This initiative provides pet owners with more convenience and choice, allowing them to purchase pet food with greater confidence. JD Supermarket’s innovative measures also lead the development direction of the industry and provide a good reference case for other e-commerce platforms. This kind of service has been continuously upgraded over the past four years. At present, the "guaranteed refund if you don't like to eat" service has expanded from a single pet food to brewed drinks, meat, etc.

2024-03-09 comment 0 1119

'Dapeng VR's 'E-Build the Future' industry new product tasting event is about to start, let us witness the arrival of the future together!'

Course Introduction：Dapeng VR plans to hold the "E-Build the Future" industry new product tasting event in Guangzhou on December 15. At that time, the mystery of Dapeng VR's new industry products will be unveiled. As an MR space computing terminal company, Dapeng VR has already been in the industry It has experienced 8 years of development and continuous innovation and exploration. Since its establishment, Dapeng VR has focused on the MR/VR field and has accumulated more than 100 invention patents on optical display, graphics algorithms, spatial positioning technology and hardware design. The company is also committed to the development of the two business lines of PCVR and all-in-one machines, constantly promoting the development of Dapeng VR, not only covering the domestic market, but also expanding to overseas markets, always maintaining the pace of progress overseas, Dapeng VR customers are all over the world 40+ countries and regions, serving 13,000+ customers

2023-11-21 comment 0 909

Which company makes bean bags?

Course Introduction：The bean buns belong to Sisi Nian Food Co., Ltd., a leading company in the quick-frozen food industry. The bean buns are one of its specialty products. They are made of high-quality soybeans and have a soft, waxy texture and delicious flavor.

2024-11-28 comment 0 234

How to write original content

Course Introduction：Search engines have increasingly higher requirements for the quality of original content on websites. Therefore, for original articles, we first need to understand the market of the industry in which the website is located, understand the news reports of the industry, and ensure that the content of original articles is novel and rich.

2019-05-26 comment 0 2628

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