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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11273

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 17598

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 11309

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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Content recommendations for audit plug-ins

Course Introduction：Test server configuration: Dell R730; 24 cores; 64G memory; ssd disk. Centos version: 6.4; MySQL version: Community 5.6.12; Test database size: 24G. sysbench parameters: 64 threads, 10 tables, each table is pre-initialized with 10 million data, read and write mixed OLTP mode. Running on the same machine as mysql. Test duration: 5 minutes/scenario. The plug-in OLTP test status is not installed...

2017-06-13 comment 0 1372

How to solve the problem that dedecms cannot be modified

Course Introduction：The solution to the problem that dedecms cannot be modified is: 1. Check whether the read and write permissions of folders and files are correct; 2. Use the latest version of DedeCMS, and keep the versions of components such as databases, plug-ins, and themes to match the CMS core; 3. Added Incompatible plug-ins or themes cause DedeCMS to fail to work properly; 4. Check PHP logs and debugging information to find out the problem and solve it.

2023-06-25 comment 0 1628

Introduction to NTFS read and write plug-in NTFS for Mac under Mac

Course Introduction：NTFS for Mac is installed on Mac like a plug-in and supports the Mac operating system to read and write the NTFS file system normally.

2020-05-12 comment 0 4253

Mechanic launches Xingchen P1000 mobile hard drive: read and write speed 1100 MB/s, priced from 399 yuan

Course Introduction：According to news from this website on February 9th, a mechanic yesterday launched a Xingchen P1000 mobile solid-state drive on JD.com, with 512G/1TB/2TB models available. It is currently in reservation status. The price information compiled by this site is as follows: 512GB model: sold for 399 yuan 1TB model: priced at 599 yuan. 2TB model: priced at 999 yuan. According to reports, the series of mobile hard drives are equipped with an all-metal aluminum alloy body and a diagonal heat conduction groove. It is said to adopt a "cyber mecha" shape, taking into account both appearance and heat dissipation capabilities. In terms of performance, this website noticed that the series of mobile hard drives are equipped with USB-C3.2Gen2 interface, with a theoretical bandwidth of 20Gbps, a read and write speed of up to 1100MB/s, support for plug-and-play, automatic sleep after 10 minutes of no operation, and a 3-year warranty.

2024-02-15 comment 0 990

How to install win7 operating system on computer

Course Introduction：Among computer operating systems, WIN7 system is a very classic computer operating system, so how to install win7 system? The editor below will introduce in detail how to install the win7 system on your computer. 1. First download the Xiaoyu system and reinstall the system software on your desktop computer. 2. Select the win7 system and click "Install this system". 3. Then start downloading the image of the win7 system. 4. After downloading, deploy the environment, and then click Restart Now after completion. 5. After restarting the computer, the Windows Manager page will appear. We choose the second one. 6. Return to the computer pe interface to continue the installation. 7. After completion, restart the computer. 8. Finally come to the desktop and the system installation is completed. One-click installation of win7 system

2023-07-16 comment 0 1167

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