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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11325

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 11338

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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Over 4,000 base stations! Beijing Unicom and Huawei complete ultra-large-scale 5G-A commercial network

Course Introduction：According to news on August 6, Huawei recently announced that it has built a global ultra-large-scale 5G-A3CC commercial network in Beijing with Beijing Unicom, achieving full 5G-A coverage in major core areas such as the Fourth Ring Road and urban sub-centers, with a 5G-A effectiveness ratio of more than 70 %. It is understood that the overall scale of this ultra-large-scale 5G-A3CC commercial network exceeds 4,000 base stations, covering a variety of key scenarios such as sports venues, schools, scenic spots, subways, business districts, and residential areas. Yang Lifan, deputy general manager of Beijing Unicom, said: "Beijing Unicom has the world's largest deployment of 5G 200MHz network. On this solid foundation, it is very convenient to further enable 3CC carrier aggregation. Follow-up 5G-A3CC scale

2024-08-07 comment 0 417

What app to use for frozen wholesale?

Course Introduction：Frozen wholesale is used in Guoquan, Merchants.com, Food Mall, Qingdao Food, China Food Network and other apps. Detailed description: 1. In Guoquan, Guoquan has a retail gene and abundant fresh food supply resources, and has innate advantages; 2. Merchants.com can connect users, stores, logistics, and supply chains through artificial intelligence, big data, etc. Elements; 3. Food Mall, with new concepts and integration, carefully launches online and offline dual-mode network platform Mall Network; 4. Qingdao Food, with the number of stores catching up with South China convenience store giant Meiyijia; 5. China Food Network, each product The channel will have a high concentration of industry professionals.

2023-09-25 comment 0 3361

What are the ppt resource sites that the editor recommends?

Course Introduction：There are many people who need to use PPT at work. The editor knows that many friends have a headache in finding PPT resources, resulting in slow speed and unsatisfactory results in making PPT. The editor has compiled some PPT resource sites, hoping to make it easier for everyone to make PPT. easy. 1. Top PPT I found a very high-quality website that focuses on sharing high-quality foreign PPT and KEYNOTE templates. It currently has more than 20,000 templates. The website also offers Google Slides templates. 2. Shangtu.com is a website with free and membership templates. It provides thousands of PPT templates for users to download for free. You only need to log in to download. 3. Material Trading Company This is a purely free resource website. You can see many beautiful foreign materials.

2024-03-20 comment 0 856

Huawei and China Unicom Beijing have over 4,000 5G-A base stations covering core areas such as the Fourth Ring Road and urban sub-centers.

Course Introduction：According to news on August 6, Huawei and China Unicom Beijing have built the world's ultra-large-scale 5G-A (5G-Advanced, also known as 5.5G) 3CC commercial network in Beijing, realizing comprehensive 5G-A in major core areas such as the Fourth Ring Road and urban sub-centers. cover. The total scale of this ultra-large-scale 5G-A3CC commercial network exceeds 4,000 base stations, covering a variety of key scenarios such as stadiums, schools, scenic spots, subways, business districts, and residential areas, including Wukesong, Shoudi, Work Sports, Beijing Station, Guijie, Panjiayuan, Beijing University of Technology, etc., the 5G-A effectiveness rate exceeds 70%. Since Beijing Unicom and Huawei commercialized the world's largest 3.5GHz 2CC urban network in August 2022, the 200MHz 2CC effectiveness ratio has exceeded 85%

2024-08-07 comment 0 834

The number of Internet users in my country reaches 1.092 billion: the Internet penetration rate is 77.5%!

Course Introduction：According to news on March 22, the China Internet Network Information Center (CNNIC) today released the "Statistical Report on the Development of China's Internet". The "Report" shows that as of December 2023, the number of Internet users in my country has reached 1.092 billion, 24.8 million new Internet users compared with December 2022, and the Internet penetration rate has reached 77.5%. As of December, the number of IPv6 addresses was 68,042 blocks/32; the number of national top-level domain names ".CN" was 20.13 million; and the number of Internet broadband access ports reached 1.136 billion. A total of 3.377 million 5G base stations have been built, covering all prefecture-level cities and counties; 2.332 billion cellular IoT end users have been developed, a net increase of 4.8% from December 2022

2024-03-22 comment 0 980

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