Five layers of NP (Natural Prefetch), HR (the outbound rate-limit layer) and the caching/failover stack aren’t boilerplate — they’re original designs I built from scratch. The first demo did come together fast, sure, but what you don’t see behind it is two-plus months of testing, reverse-engineering how Reddit actually behaves, hunting down bugs, iterating, and writing a real test suite.

One concrete example: I wrote the cache-eviction logic myself. Small and large files are each run through a scoring function, and every cleanup pass consults that score to decide what to drop — done as a non-IO-intensive, incremental sweep instead of a blocking purge. That’s not something a one-shot prompt hands you; it came out of actually watching the thing misbehave under load and tuning it until it didn’t.

If you want to dig in, the commit history and the test suite are right there in the repo — happy to walk through any part of the design.