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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11425

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 17717

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 11416

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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How does the partition tool diskgenius batch format USB disks-How does diskgenius batch format USB disks

Course Introduction：Recently, some friends have asked me how to format USB disks in batches with the partitioning tool diskgenius. The following is a method for formatting USB disks in batches with the partitioning tool diskgenius. Friends in need can come and learn more. Step 1: In the DiskGenius software, select one or more USB removable disks. Step 2: Click on the DiskGenius tool menu. Step 3: Click on the batch format USB disk option. Step 4: Set the disk parameters and confirm. Step 5: As shown in the picture, this USB disk has been formatted in batches and the disk has no content.

2024-03-04 comment 0 1280

Yingruida T705 PRO M.2 PCIe 5.0 solid-state drive is now available in China: sequential reading up to 14500 MB/s, starting from 1899 yuan

Course Introduction：According to news from this site on March 15, Yingruida launched the national version of the T705PROM.2NVMePCIe5.0 solid-state drive on JD.com today, with options of 1TB/2TB/4TB. The specific price information compiled by this site is as follows: 1TB model: 1899 yuan 2TB Model: 3,499 yuan 4TB model: 4,999 yuan In terms of parameters, the T705PROM.2NVMePCIe5.0 SSD uses Micron’s 232-layer TLCNAND technology and supports Microsoft DirectStorage, multi-layer data integrity algorithm, TRIM, power-off data protection, adaptive thermal protection, and dynamic write acceleration. , APST, SMART, TCG, independent NAND, ECC and other functions, specific hard drive parameters

2024-03-16 comment 0 653

Detailed explanation of Linux command lsscsi

Course Introduction：To understand the lsscsi command, first we need to understand what SCSI is and common hard disk interfaces and common hard disk parameters. 1. What is SCSI? SCSI (Small Computer System Interface) is a complete data transfer protocol, which is mainly used to transfer commands, status and block data between the host and storage devices. Among various storage technologies, SCSI technology is the most important pillar. The SCSI protocol is located between the operating system and external resources, and it has a series of functional components. The I/O operations of the operating system on external devices (such as disks, tapes, optical disks, printers, etc.) can be implemented through the SCSI protocol. Typically, the SCSI protocol is embedded into the device driver

2024-02-11 comment 0 1251

Movesu launches ST10 mobile hard drive: with built-in touch screen, reading speed of 1050 MB/s, 1TB priced at 1,299 yuan

Course Introduction：According to news from this website on August 23, mobile speed launched an ST10 mobile hard drive on JD.com today. The hard drive comes with a touch screen, a reading speed of 1050MB/s, and a 1TB capacity priced at 1,299 yuan. According to reports, this mobile hard drive has a touch screen on the front. Users can check the status of the hard drive in real time through the touch screen. It also supports entering a password to encrypt/unlock the hard drive. In terms of specifications, the mobile hard drive shell is made of zinc alloy, uses "3D NAND Flash" flash memory particles, uses the USB-C3.2Gen2 interface, has a reading speed of 1050MB/s and a writing speed of 900MB/s. The hard drive parameters attached to this site are as follows:

2024-08-23 comment 0 970

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 1254

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