Category

Deep Dives

How a system was built and what it cost — the trade-offs behind a single engineering decision, in detail.

2026-05-12 Testing a social app that has no users yet Proximity discovery, feed ranking, k-threshold suppression — every core feature of Hookay depends on crowd behavior, and our crowd doesn't exist yet. How we build and test a location-based social product pre-launch: synthetic populations, simulated cities, and the bugs only fake people can find. Deep Dive