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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11360

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 17663

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 11377

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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乱码-一段转换编码的代码在在线测试的时候正常，写入php文件运行却不正常！

Course Introduction：< $len) { $ud = 0; if (ord($c{$a}) >=0 && ord($c{$a})=192 && ord($c{$a})=224 && ord($c{$a}

2016-06-02 comment 0 1123

IoT and smart home technology in Java

Course Introduction：Java is a widely used programming language that is widely used in the development of various applications, including areas such as the Internet of Things and smart homes. In this article, we will introduce the application of Java in IoT and smart home technology. The Internet of Things refers to a system that connects various physical devices (such as sensors, actuators, etc.) to each other and exchanges data through the Internet. Java has powerful network programming capabilities and can well support the development of IoT applications. Java can use various protocols such as HTTP, TCP, UD

2023-06-09 comment 0 840

C# p2p voice chat tool based on udp

Course Introduction：Originality statement: The source of this blog post is http://blog./zhujunxxxxx/article/details/39251241. If reprinted, please indicate the source. The author of this article is original, and his email address is zhujunxxxxx@163.com. If you have any questions, please contact the author. Overview: I have previously published an article on UDP in C# to achieve reliable transmission (packet transmission). UDP packet transmission has been implemented. function, and this article is mainly an application, using ud

2018-05-16 comment 0 2746

A new high-performance full-frame lens is released: RF200-800mm F6.3-9 IS USM makes a shocking debut

Course Introduction：According to news on November 3, Canon has recently launched a telephoto zoom lens that has caught the attention of photography enthusiasts - RF200-800mmF6.3-9ISUSM, becoming Canon's first lens with an 800mm telephoto end. The initial price of this full-frame mirrorless lens is 14,399 yuan. According to the editor's understanding, the RF200-800mmF6.3-9ISUSM lens adopts a high-quality design, including a lens structure of 17 elements in 11 groups, including 3 UD lenses, to ensure excellent optical performance. This means photographers can get clear, high-quality long-distance shooting effects. In terms of design, the RF200-800mmF6.3-9ISUSM lens supports RF1.4x and RF2 across the entire focal length.

2023-11-03 comment 0 732

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