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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11324

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 17630

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 11334

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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Is Dreamweaver CMS a mall?

Course Introduction：DreamWeaver CMS is not a mall, it is an open source website construction and management system. But DreamWeaver cms can be used to build shopping mall websites. Reasons for building a mall: 1. Rich functions, providing the functions required by the mall such as product management, order management, online payment, logistics management, etc.; 2. Strong scalability, users can choose and install corresponding plug-ins according to their own needs. For example, product search plug-ins, shopping cart plug-ins, membership system plug-ins, etc.; 3. There are rich template resources. For mall websites, users can choose suitable templates; 4. There are many successful cases in mall website construction.

2023-08-03 comment 0 1407

Using PHP array to implement online shopping cart function

Course Introduction：Using PHP arrays to implement online shopping cart functions When developing e-commerce websites or other websites that require shopping functions, the shopping cart is a very important functional module. The shopping cart can help users temporarily save the items they are interested in to facilitate subsequent settlement. In this article, we will use PHP arrays to implement a simple shopping cart functionality. The functions of the shopping cart include adding products, deleting products, updating product quantity, and calculating total price. First, we need to create a shopping cart array and initialize it to an empty array. We can use the following

2023-07-15 comment 0 959

Can a USB flash drive be inserted into the tablet?

Course Introduction：The tablet can be plugged into a USB flash drive, but it needs to be inserted and used through a USB OTG adapter to expand the storage space. This adapter is similar to a converter that converts the tablet's USB interface into a standard USB interface so that users can use a USB flash drive. It can usually be purchased through online shopping sites or electronic device stores.

2023-08-16 comment 0 10795

How to check the courier tracking number on the Jingdong app How to check the courier tracking number

Course Introduction：There are countless good products provided in the Jingdong app software. Basically, a lot of mobile phone users come to buy any product they want every day. Each product is strictly controlled to meet the online shopping needs of different users. The interface of the software is very exquisite. Product sections of different categories are open all day long. There are also dozens of shopping red envelope coupons that can be collected and used for free. You can add your personal delivery address, arrange delivery for online shopping and offline, and automatically generate payment after completion. For orders, you can check the order number and the latest developments in logistics and distribution. You can find whatever you want to buy. You can open the purchase at any time and enjoy the most considerate shopping service. Now the editor will provide JD users with detailed online inquiry of express orders. number method. 1. Open JD.com and click on [My] page

2024-03-12 comment 0 930

What is the best New Zealand online shopping app? (Recommended by New Zealand shopping website)

Course Introduction：What app should I use for online shopping in New Zealand? What app should I use for online shopping in New Zealand? Shopping on Taobao in New Zealand: 1. Just log in to Taobao and shop like you do in China. New Zealand also has a Bank of China, and you can go and handle the recharge business. 2. For express delivery, you can communicate with the Taobao seller. For goods less than 2kg, it is most cost-effective to use EMS international small package. For heavy items, you can only use EMS international express, DHL, TNT and other international express delivery. Which Chinese version of New Zealand Navigation is easier to use? You can choose to use Google Maps for the Chinese version of New Zealand Navigation. It not only provides accurate navigation routes, real-time traffic information and voice navigation, but also provides detailed business information and reviews to facilitate users to find surrounding restaurants, gas stations, supermarkets and other service facilities. In addition, G

2024-01-02 comment 0 1176

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