System Design Studio
One AWS-first system design a day, written as an architecture-review transcript — proposed, critiqued, defended.
Pattern coverage
ingestionstoragecachingsearchmessagingrealtimegeorate-limitingid-generationcoordinationmedia-cdnanalytics-olapml-servingpayments-exactly-oncenotification-fanout
staff
Geospatial proximity search at scale
Geohash boundary bugs, H3 hexagons, and Redis GEORADIUS are the easy part — the hard part is 2 million driver-location writes per second without hot shards, stale ghosts, or cross-region lag that mismatch surge pricing.
staff
Distributed rate limiting at API gateway scale
One INCR is easy; one million requests/second across 10k tenants without a race, a thundering herd, or a cross-region round-trip is the interesting version.