It doesn’t use a centralized database. The content URL is encrypted, packaged within the URL, & cryptographically signed to ensure integrity (preventing tampering of price and wallet address).
When you click on the URL, it performs calculations, compares the hash & verifies the URL. Once verified, it initiates the invoice creation, which now runs concurrently and can be canceled later if needed. Wallet providers have their own limitations.
Lambda serverless functions can scale up to millions of requests per second, but they have a warm-up time and noticeable latency, especially for users far from a data center. The new implementation uses Edge functions distributed worldwide, which is the best possible option currently.
The short URL is simply a lightweight edge proxy with caching, and in the browser's address bar, you’ll see the original URL.
Comparison https://image.nostr.build/8801968c747c59364fe05bf597b494bad6c174abd4475b6b98c1d714b5be0fd5.jpg
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