Panduan Kejuruteraan: Freelance Programmer: High-Scale Cardinality & Deduplication (HyperLogLog & Bloom). Aldian Fazrihady ialah Programmer Bebas Kanan & Jurutera AI (Python, Django, FastAPI, React, Next.js, TypeScript, Golang).
Count billions of unique visitors in 12KB of RAM (`PFADD`/`PFCOUNT`) and deduplicate crawler/webhook streams with sub-millisecond Bloom Filters by hiring senior freelance programmer Aldian Fazrihady.
async def record_and_count_unique_visitors(redis_client, tenant_id: str, date_str: str, visitor_hash: str) -> int:
key = f"hll:uv:{tenant_id}:{date_str}"
await redis_client.pfadd(key, visitor_hash)
return await redis_client.pfcount(key)