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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11327

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 17632

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 11338

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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What software is cdr What is cdr

Course Introduction：cdr is the source file storage format of the software CorelDraw. Tutorial Applicable Model: Lenovo AIO520C System: Windows 10 Professional Edition: CorelDraw2021 Analysis 1cdr is the source file storage format of the software CorelDraw. It is a vector file. Similarly, we can use CorelDraw software to open cdr files. This software provides various functions such as vector animation materials, interface design, website construction, bitmap writing, and web page animation. It is a design and typesetting software for designers and printers. Supplement: What is cdr software for? 1CDR’s full name is CorelDraw. It is a vector drawing software. It is a common design and drawing software and is widely used.

2024-02-22 comment 0 1523

How to create silhouette text in CorelDRAW Production method tutorial

Course Introduction：CorelDRAW is a very easy-to-use picture design software. It has many powerful functions that can help users design a variety of beautiful and creative pictures and text. Today, let us take a look at how to create silhouette text. Most of these text effects are made with silhouettes of small animals or plants, so we need to prepare this type of vector material. Let’s take a look at the details! The specific operations are as follows: 1. Open the CorelDRAW software and substitute the vector material. If it is not a vector image, click [Tracing Bitmap] to convert it. 2. Use the [Pen Tool] to circle the part where you want to replace the text. 3. Select the silhouette material and the drawn curve. , click Intersect, extract the tail and click Simplify to remove the tail from the original material. 4. Input

2024-02-09 comment 0 1248

What is the difference between Huawei p30 and p40

Course Introduction：The differences between Huawei p30 and p40: 1. Appearance design and screen; 2. Camera; 3. Processor; 4. Operating system; 5. Battery capacity and fast charging; 6. Weight and body material; 7. Other characteristics. Detailed introduction: 1. Appearance design and screen. Huawei P30 adopts a water drop notch design, while P40 adopts a more fashionable design with narrower borders and a higher screen-to-body ratio, making the screen larger; 2. Camera. Huawei P40 is equipped with a more powerful camera system, using four cameras, while P30 is equipped with a 40-megapixel main camera and so on.

2023-12-05 comment 0 3107

Samsung releases 'Ruibao” and 'Huibao” panda-themed Galaxy Buds 2 Pro headphone protective cases, which are full of cuteness

Course Introduction：Samsung recently issued a press release announcing the launch of a special "Galaxy Buds 2 Pro Bao Package" in the Korean market. The design inspiration of this product comes from the two panda babies born in the Panda World of Yongin Everland, South Korea on July 7, 2023-"Ruibao" and "Huibao". It is understood that the "Galaxy Buds 2 Pro Bao Package" cleverly incorporates the characteristics of the panda, including the unique stripes on its back, forehead and nose, as well as the cute round ears, making the entire product full of cute elements of the panda. The protective cover is made of soft and fluffy ivory material, which feels very comfortable and makes you want to put it down. It is understood that this model is called "GalaxyBuds2Pr"

2024-03-02 comment 0 1315

What screen is Nokia 5233 (Nokia 5233 mobile phone parameters)

Course Introduction：5D curved screen design, Nokia 2720 is a classic flip phone with a 2-inch capacitive screen, using 2. The resolution is 1920×1080 pixels. It is equipped with a 5D screen on the front. The back of the fuselage adopts a 3D arc design and feels Very comfortable. The meaning of this request is to meet the daily photography needs. The front-facing 8-megapixel camera. The Nokia 2720 uses a rear-facing 13-megapixel lens, and there is a small one on the top of the fuselage. In terms of body material, the plastic body , The metal frame is made of plastic material with the "NOKIA" logo. Weighing only 169 grams, Nokia 2720 has a built-in 3000 mAh battery and the body thickness is only 12 mm. It is very convenient to use and can also support memory

2024-04-01 comment 0 753

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