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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11245

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 17581

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 11291

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 coin is Iota? Is Iota valuable?

Course Introduction：IOTA: A potential currency in the Internet of Things field IOTA is a cryptocurrency designed specifically for Internet of Things (IoT) devices, using a method called a "directed acyclic graph" ( DAG) technology. This technology enables transactions to occur without fees and become faster and more secure as the network scales. Iota is designed to solve some of the challenges faced by traditional blockchain technology, such as high energy consumption, low scalability and transaction fee issues. Iota’s advantages include: High throughput: DAG technology enables Iota to The ability to handle thousands of transactions per second makes it ideal for IoT devices. Scalability: Iota’s network scales as new devices are added, enabling it to support the growing IoT

2024-02-28 comment 0 1134

How to check Iota transaction volume?

Course Introduction：How to check Iota transaction volume? Choose a platform that supports viewing Iota trading volume. Exchanges: Mainstream exchanges such as Binance, Huobi, and OKX all provide IOTA trading volume query functions. Market websites: CoinMarketCap, CoinGecko and other market websites also provide IOTA transaction volume query functions. Block browser: The block browser can view all Iota transaction records, and by analyzing the transaction records, the Iota transaction volume can be calculated. Search for Iota trading pairs. Search for IOTA trading pairs on exchanges or market websites, such as IOTA/USDT, IOTA/BTC, etc. View transaction volume data. On the trading pair page, you can see the trading volume data of Iota Coin. Usually includes 2

2024-02-28 comment 0 368

How to check the IOTA coin transaction volume?

Course Introduction：How to check the IOTA coin transaction volume? 1. Choose a platform exchange that supports viewing IOTA currency trading volume: mainstream exchanges such as Binance, Huobi, and OKX all provide IOTA currency trading volume query functions. Market websites: CoinMarketCap, CoinGecko and other market websites also provide IOTA currency transaction volume query functions. Block browser: The block browser can view all IOTA currency transaction records, and the IOTA currency transaction volume can be calculated by analyzing the transaction records. 2. Search for IOTA currency trading pairs. Search for IOTA currency trading pairs on exchanges or market websites. Common IOTA currency trading pairs include IOTA/USDT, IOTA/BTC, IOTA/ETH, etc. 3. Check transaction volume

2024-02-28 comment 0 381

What is IOTA coin? Is IOTA coin valuable?

Course Introduction：IOTA Coin: Introduction to Value Transfer Protocol in the Internet of Things Era IOTA is a cryptocurrency designed specifically for IoT devices. It uses a distributed ledger technology called "Tangle" to achieve fast, secure and fee-free transactions. Its goal is to become a standard protocol for value transfer between IoT devices. IOTA is unique in that it does not require a blockchain, making transactions more efficient and scalable. Through Tangle technology, each user participating in a transaction will also help verify other transactions, thereby enhancing the security and reliability of the entire network. This innovative design makes IOTA have great potential in the field of Internet of Things, laying an advantage for achieving seamless interconnection between smart devices. No handling fees: the transaction of IOTA coins is completely free.

2024-02-28 comment 0 662

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