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Self-study IT network Linux load balancing video tutorial

Course Intermediate 11425

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 17717

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 11416

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 transaction value in mongodb

I'm making a Mern project and I need to update two fields in a mongodb record. I have two fields, one is an array of objects called wallets and the other is transactions. I get an object from the frontend which includes the amount, index of the wallet where the transaction was made, as wallet is an array of objects in mongo. Now I need to subtract the transaction amount from the wallet. How to do this I have written a controller in node.js but it is not doing anything. The object I receive from the frontend if ..transaction={amount:'50'

2023-09-13 19:30:49

Learn about CSRF

I don't see how using a "challenge token" adds any kind of prevention: what value should be compared to what? From OWASP: Generally speaking, developers only need to generate this token once for the current session. After initial generation of this token, its value is stored in the session and used for each subsequent request until the session expires. If I understand the process correctly, this is what happens. I log into http://example.com and create a session/cookie containing this random token. Each form then contains a hidden input that also contains the

2023-10-23 13:57:29

Export/download Mapbox maps with overlays and markers from HTML

I want to build an HTML page where customers can build their personalized maps. I used Mapbox to create this. There is an overlay on top of this map, and customers can also place markers on the map. But I'm struggling with two big problems: How to get a high quality map image, including overlays and markers. Because I want to print them on a poster. How can I implement this logic in my online store so that after the customer clicks "save" and makes a purchase, this image is sent to my server so that I can print it. https://www.cartida

2024-03-29 11:15:04

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

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How to use address to buy coins in tp wallet

Course Introduction：How to buy coins using an address through TP wallet: Download and install TP wallet. Create or import a wallet. Select the "Buy" option. Select your purchase method and currency. Enter the receiving address. Enter the purchase amount. confirm purchase. Wait for the transaction to complete. Receive the purchased coins.

2024-04-08 comment 0 1204

How to buy Solana's coins in TP wallet

Course Introduction：How to buy Solana (SOL) coins using TP wallet? Create a TP wallet account; add the Solana mainnet; top up your wallet with other cryptocurrencies; select the desired cryptocurrency on the exchange and enter the SOL purchase amount; confirm the transaction and enter the transaction password; view the Solana coin balance.

2024-04-30 comment 0 1213

Learn how to buy cryptocurrencies with TP wallet from scratch

Course Introduction：TP Wallet is a digital currency wallet released by the TP team, which provides a user-friendly interface and powerful functions. TP wallet supports multiple cryptocurrencies, such as Bitcoin, Ethereum, and Litecoin, and has rich transaction functions, such as transfer, exchange, and collection. Users can easily manage their digital assets through TP wallet. But for wallets, users are often not satisfied with the issue of managing assets. More people also want to buy coins directly in the wallet. So how to buy coins in TP wallet? This is a question that many users want to know. Next, I will explain it in detail for you. How to buy coins in TP wallet? In order to conduct USDT buying and selling transactions, it is generally necessary to first transfer USDT from a cold wallet to a hot wallet or exchange account that supports transactions. Then, on the branch

2024-01-19 comment 0 1862

How to buy coins on Solana chain in TP wallet

Course Introduction：Steps to use TP wallet to purchase coins on Solana chain: Install TP wallet; create wallet and write down mnemonic phrase or private key; add Solana chain; click to buy SOL and choose purchase method; receive and view transaction history.

2024-04-30 comment 0 614

Buy coins on tp wallet exchange

Course Introduction：Steps to purchase cryptocurrency using TP wallet: 1. Set up the wallet and connect the device; 2. Recharge funds and send them to the recharge address; 3. Find the trading market and select the cryptocurrency; 4. Place an order, select the order type and enter the quantity; 5. .Monitor the order, and the purchase will be automatically deposited into the wallet.

2024-10-15 comment 0 491

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