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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11304

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 17616

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 11321

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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New HMD mobile phone unveiled! Adopts bright colors similar to Nokia Lunia

Course Introduction：Recently, HMD Global CEO Jean Francois Baril announced that the company will launch its own brand of HMD mobile phones. And the name of Nokia's social account and website has been changed to HumanMobileDevices (HMD). Now, the website has been partially updated. HMD website design update HMD’s updated website design features images of the phone in three bright colorways: blue, green, pink. These colors and design schemes are reminiscent of the bright, solid color designs of Nokia’s Lumia phones. According to the website, the new HMD phones will come in these bright colors. However, it's unclear whether HMD will adopt these colorways on future devices. fenye worth mentioning: blue phone discovery

2024-08-21 comment 0 624

Quotation for scrap computer motherboards?

Course Introduction：According to public information, the recycling price of computer motherboards varies depending on factors such as region, brand, and quality. The following are some reference quotes: 1. Zhengzhou Kejin Machinery Equipment Co., Ltd.: waste electrical appliance recycling, waste mobile phone IPAD smart motherboard recycling, waste electronic motherboard resource recycling station, Alipay transactions. The price varies according to the motherboard's brand, quality, usage and other factors, and the approximate range is between ¥500-¥7,000. 2. Feiteng Renewable Resources Recycling Station in Xixiang, Baoan District, Shenzhen City: Various motherboards and electronic boards are recycled, and manufacturers purchase waste motherboards and semi-finished products in large quantities. The price varies according to the motherboard's brand, quality, usage and other factors, and the approximate range is between ¥100-¥1,000. 3. Dingyuan Renewable Resources (Shenzhen) Co., Ltd.: Accounting destruction, documents

2024-06-09 comment 0 768

Guangdong Telecom and Huawei completed China's first thousand-cell 5G-A deployment, with downlink speed exceeding 4Gbps

Course Introduction：According to news from this website on February 4, recently, China Telecom Guangdong Branch (Guangdong Telecom for short) and Huawei completed the country's first 3.5GHz+2.1GHz3CC thousand-cell contiguous scale deployment in Shenzhen. By using F+T three carriers Aggregation technology, tested downlink rate exceeds 4Gbps. Huawei 2.1GHz8T8R is a full-scenario, efficient, green and low-carbon 5G-A network construction solution. This solution uses 2.1GHz of the FDD mid-band spectrum, has a large exclusive uplink bandwidth of 40MHz, and works together with TDD200M to achieve an excellent 5G-A uplink and downlink experience. The green and low-carbon nature of this solution enables excellent performance and sustainability in various application scenarios. Huawei 2.1GHz8T8R provides users with

2024-02-05 comment 0 1172

Guangdong Telecom and Huawei completed China's first thousand-cell 5G-A deployment, with downlink speed exceeding 4Gbps

2024-02-05 comment 0 1094

What does Dreamweaver CMS mainly do?

Course Introduction：Dreamweaver CMS is mainly responsible for the construction, management and maintenance of websites. 1. Website construction, Dreamweaver CMS provides a wealth of templates and plug-in resources. Users can choose appropriate templates and plug-ins according to their own needs and quickly build their own websites; 2. Website management, Dreamweaver CMS provides simple and easy-to-use templates and plug-ins. Management backend interface, users can log in to the backend through a browser for website management; 3. Website maintenance, Dreamweaver CMS provides automatic backup and database management functions to ensure the security and stable operation of the website.

2023-08-08 comment 0 966

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