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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 11379

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 to restore color when the phone turns black and white 'Recommended detailed method to change black and white screen to color'

Course Introduction：Excluding the extreme situation of black and white screen due to hardware damage of the phone itself, there are three reasons why the screen of Huawei mobile phone becomes black and white: after the mobile phone turns on the e-book mode, it changes to black and white screen. Turn off this mode to restore the color screen. If the "Full Color Blindness" option is selected for the simulated color space function under developer options, the Huawei phone will have a black and white screen. To solve this problem, you only need to turn off the simulated color space function to restore the color screen. When some special events occur (such as the death of a great man, earthquakes and other major events), the entire network will enter mourning mode. At this time, you only need to wait for the mourning period to pass and the website will return to normal. Implemented based on Huawei P50 and HarmonyOS2.0. How to turn off the e-book mode is introduced on the Huawei mobile phone settings page, click

2024-02-06 comment 0 3483

TRYX LUCA L70 full-view ocean view room chassis is launched on the official website, equipped with an X-shaped 40mm heightening base

Course Introduction：According to news from this site on June 19, TRYX, which has launched "curved screen water cooling", recently launched an E-ATX mid-tower chassis called LUCAL70 on its official website, including black and white versions. The chassis adopts the popular "full sea view room" design. The front glass panel is a hinged door-opening structure. The entire chassis is made of aluminum alloy exoskeleton and 1mm thick SGCC galvanized steel plate. A TRYX themed laser nameplate can also be installed on the top. One of the design features of LUCAL70 is that it is equipped with a 40mm height X-shaped "suspended base" at the bottom, which can improve the cooling effect of the bottom fan. This website noticed that this TRYX chassis has a modular layout and can be switched between the bottom and top power supply compartment modes. Among them, placed under the power compartment

2024-06-19 comment 0 1160

How to enable or disable dark mode on iOS, Android and Windows?

Course Introduction：Every bit of information I give people, I consider the lowest common denominator. A common misconception is that everyone who joins or browses technology websites is a technology person. Some people are just looking for guidance. That's why these technical tips may seem a little too simplistic to some, but educational to others. There's an option called "Dark Mode" on iPhone, Android, and Windows that provides a dark theme for every app that supports it, making it easier to see because it's less bright. Some people turn on dark mode all the time, and for iPhones, some schedule dark mode to turn on at a certain time in the evening. On your iPhone, click Settings, click Display and Brightness here, and you

2023-04-21 comment 0 1536

ZALMAN launches P10 chassis: 270° column-free design, available in black and white

Course Introduction：According to news from this site on February 14, ZALMAN yesterday announced the launch of the P10 chassis, featuring a "270° column-free" design, available in black and white, and the price has not yet been announced. ▲Image source ZALMAN official press release (the same below) According to reports, the P10 chassis claims to have a "stylish, clean and modern" appearance, is equipped with a magnetic dust filter, adopts a 270° column-free design, and has "groove fixing" on the front/side Structure" tempered transparent glass supports easy disassembly without tools. In terms of size, the overall size of this chassis is 418mmx216mmx422mm and weighs 6.1 kg. It supports Mini-ITX and Micro-ATX motherboards and provides up to two 3.5-inch hard drive bays or three 2.5-inch hard drive bays.

2024-02-15 comment 0 1068

What should I do if the browser homepage content turns gray?

Course Introduction：What should I do if the content on the browser homepage turns gray? Recently, many people have experienced that the homepage content is gray when using browsers. This problem occurs in Edge, 360, QQ browser and other software. Many users do not know what is causing it and do not know what to do. After returning to normal, the editor of this issue will share the specific steps. What should I do if the content on the browser homepage turns gray? Answer: When major events occur, the website will observe a moment of silence and the administrator will enable gray mode. Solution: Take Edge as an example. 1. First click the "..." settings icon in the upper right corner of the browser. 2. Then click the Change Appearance bar under Settings. 3. Then change the gray to light color in Custom Appearance.

2024-08-21 comment 0 405

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