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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11279

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 17603

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 11314

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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Huawei returns to the top of the world's top 500 IoT companies, with more than 150 Chinese companies on the list

Course Introduction：According to news from this website on July 20, the 2024 (ninth) World Internet of Things 500 Summit was held in Beijing yesterday, and the ranking of the World’s Top 500 Internet of Things was announced, including the well-known Huawei, Qualcomm, Microsoft, SpaceX, China Aerospace Science and Industry, China Aerospace Science and Technology, IBM, Siemens, Intel, Samsung, etc., involving nearly 50 major economies around the world. The top 500 list also includes more than 150 Chinese companies, including China Unicom, China Telecom, China Mobile, China Electronics, China Electronics Technology, China Petroleum, State Grid, CRRC, TSMC, MediaTek, Gree Electric, Haier Group, iFlytek, Origin Quantum, JD.com, Lenovo, Baidu, Alibaba, Tencent, Xiaomi, HiSilicon, Huawei, ZTE, DJI, SMIC, etc.

2024-07-20 comment 0 330

What does Xiaomi's high-performance servo motor do?

Course Introduction：Xiaomi's high-performance servo motors play an important role in industrial automation, robotics, medical equipment, aerospace and other fields. Detailed introduction: 1. Industrial automation realizes precise position control and speed adjustment, allowing equipment to efficiently complete various tasks; 2. Robot technology, servo motors can make robot movements more accurate and precise through precise position and speed control. Smooth; 3. Medical equipment, servo motors can drive the joints of surgical robots, enabling them to perform minimally invasive surgeries and precise operations; 4. Aerospace and other fields, etc.

2023-09-26 comment 0 1103

Technology Last Night This Morning 0801: New photos of Apple iPhone 16 model exposed; executives of NIO, Xpeng, Geely and other car companies publicly opposed the weekly sales list; Railway 12306 launched a 'fixed bus' service

Course Introduction："Technology Last Night and This Morning" time, hello everyone, it is Thursday, August 1, 2024. Today's important science and technology information is: 1. Wu Meirong, the world's first female aerospace technology expert to be awarded the Von Kármán Award, passed away at the age of 88. The famous Chinese aerospace technology expert, academician of the International Academy of Astronautics, one of the presidium members, the first female aerospace technology expert in the world to be awarded the Von Kármán Prize (known as the "Nobel Prize in Aerospace Science"), former director of the China Resources Satellite Application Center, Wu Meirong, the former chief designer and commander of the Resource Satellite Engineering Application System, one of the founders, first chairman and senior consultant of the China Remote Sensing Application Association, died in Beijing at 5:20 on July 28, 2024 due to ineffective treatment. , died at the age of 88. >>View details

2024-08-01 comment 0 609

The First Institute of Aerospace Science and Technology Group will build a national measurement data construction and application base

Course Introduction：China Aerospace Science and Technology Corporation announced that the State Administration for Market Regulation has approved the establishment of a national metrology data construction and application base (space launch industry) based on the Beijing Aerospace Metrology and Testing Technology Institute, the first institute of China Aerospace Science and Technology Corporation. This initiative will further promote the development of the space launch industry and promote the application of national measurement data construction. According to inquiries, the State Administration for Market Regulation approved the plan to build a national metrology data construction and application base (space launch industry) based on the Beijing Institute of Aerospace Measurement and Testing Technology around January 17. The National Metrology Data Construction and Application Base (Space Launch Industry) will focus on the metrology needs in the development, production, and testing of equipment in the space launch field in accordance with the national digital economy strategy and the development needs of metrological digital transformation, and carry out model-based

2024-02-13 comment 0 582

Exploring Test Automation in Embedded Systems Testing

Course Introduction：In today's fast-paced world, embedded systems are becoming increasingly prevalent in various industries, from automotive and aerospace to medical devices and consumer electronics. These systems, which consist of hardware and software components worki

2024-11-05 comment 0 1018

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