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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11429

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 17720

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 11417

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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Update using multiple JOINs in MySQL/Python

The first set of questions were deemed too similar to another post (it wasn't) and were closed... so I've made another attempt here, hopefully better worded this time. Some background: We have a relationship here. Securities (coins) + currencies (base coins) form a pair. A pair and a broker form an asset (I treat each broker/pair as a specific asset) and I also have a forex table that stores live currency rates. In my transaction history table (history_price), there is a column that contains a lot of NULL (Euro volume), and I do calculations based on the volume. What I want to do is fill it,

2023-09-12 21:19:12

Predis executes two commands using transactions, but one of them fails

Description error I'm using a redis list to make a limiter and it works as expected most of the time, but recently I've discovered that there are some keys that don't have an expiration time. Ideally I would "rpush" the values into the list and set the expiry time in a transaction and I would also use "watch" before the transaction starts. This bug is not reproduced in my local environment, even if I use jmeter to batch request related APIs, such as 500 requests per second Version: Prediction: v2.1.2PHP7.4Redis Server 5.0.10 Code Example $redisCl

2023-09-13 17:55:41

Rewrite the title as: Translate "Array as session variable" into Chinese as "Use array as session variable"

In PHP, is it possible to set an array as a session variable? The situation is that I have a table (first page) in which some cells have links to specific pages. The next page will have a list of names (the second page, which I want to save in a session array) with corresponding checkboxes. After submitting this form, it will lead to a transaction page (third page) where the value of the published checkbox will be saved in the database under the corresponding name. Now, if I go back to the first page and click on another cell, will the sessions array contain the new list of names or the old list of names?

2023-08-21 18:07:56

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

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How to check Bitcoin transaction volume?

Course Introduction：How to check Bitcoin transaction volume? 1. Choose a platform exchange that supports viewing Bitcoin trading volume: mainstream exchanges such as Binance, Huobi, and OKX all provide Bitcoin trading volume query functions. Market websites: CoinMarketCap, CoinGecko and other market websites also provide Bitcoin transaction volume query functions. Block explorer: The block explorer can view all Bitcoin transaction records and calculate the Bitcoin transaction volume by analyzing the transaction records. 2. Search for Bitcoin trading pairs. Find Bitcoin trading pairs on exchanges or market websites, such as BTC/USDT. 3. Check the trading volume data. On the trading pair page, you can see the trading volume data of Bitcoin, which usually includes 24-hour trading volume, 7-day trading volume, and 30-day trading volume.

2024-02-28 comment 0 1265

How to check Bitcoin transaction volume?

Course Introduction：How to check Bitcoin transaction volume? 1. Choose a platform exchange that supports viewing Bitcoin trading volume: Mainstream exchanges such as Binance, Huobi, and OKX all provide Bitcoin trading volume query functions. Market websites: CoinMarketCap, CoinGecko and other market websites also provide Bitcoin transaction volume query functions. Block explorer: The block explorer can view all Bitcoin transaction records and calculate the Bitcoin transaction volume by analyzing the transaction records. 2. Search for Bitcoin trading pairs. Search for Bitcoin trading pairs on exchanges or market websites, such as BTC/USDT, BTC/USD, etc. 3. View transaction volume data On the trading pair page, you can view Bitcoin transaction volume data. Things to note: Bitcoin offered by different platforms

2024-02-29 comment 0 1260

How to check Bitcoin SV transaction volume?

Course Introduction：How to check Bitcoin SV transaction volume? 1. Choose a platform exchange that supports viewing Bitcoin SV trading volume: mainstream exchanges such as Binance, Huobi, and OKX all provide Bitcoin SV trading volume query functions. Market websites: CoinMarketCap, CoinGecko and other market websites also provide Bitcoin SV transaction volume query functions. Block browser: The block browser can view all Bitcoin SV transaction records, and the Bitcoin SV transaction volume can be calculated by analyzing the transaction records. 2. Search for Bitcoin SV trading pairs. Search for Bitcoin SV trading pairs on exchanges or market websites, such as "BSV/USDT" or "BSV/BTC". 3. Check the transaction volume data. On the trading pair page, you can view the transactions of Bitcoin SV.

2024-02-29 comment 0 1024

Bitcoin quantitative trading platform Bitcoin trading platform official

Course Introduction：The Bitcoin quantitative trading platform can be said to be one of the hot topics in the current financial technology field. With the popularity of Bitcoin and the expansion of the market, more and more traders are beginning to pay attention to this area and hope to achieve better investment returns through quantitative trading. In this article, we will delve into the concepts, principles and advantages of the Bitcoin quantitative trading platform to provide readers with a comprehensive understanding. What is a Bitcoin quantitative trading platform? The Bitcoin quantitative trading platform is a financial technology innovation based on artificial intelligence and algorithmic trading. Its goal is to achieve high-frequency trading and data analysis of the Bitcoin market by establishing a complete set of quantitative trading strategies and automated trading systems to obtain better investment returns. Compared with traditional manual trading methods, quantitative trading has more

2024-02-05 comment 0 1231

How to check Bitcoin Cash transaction volume?

Course Introduction：How to check Bitcoin Cash transaction volume? Assessing Bitcoin Cash (BCH) market activity and liquidity is crucial, and understanding its trading volume can provide valuable insights. Here are some ways to analyze Bitcoin Cash trading volume: Choose a Platform There are many platforms to view Bitcoin Cash trading volume, including: Exchanges: Major exchanges such as Binance, Huobi, OKX, and others offer trading on Bitcoin Cash trading pairs Quantity data. Market websites: CoinMarketCap, CoinGecko and other market websites provide real-time transaction volume information for Bitcoin Cash. Block explorers: Block explorers such as Blockchair and Blockchain.com allow you to view all Bitcoin Cash transaction records and analyze these records to

2024-03-21 comment 0 725

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