Architecture & Thinking

Nov 8, 2022 · Databases

Mastering Redis HyperLogLog: Efficient Cardinality Estimation for Big Data

This article explains Redis HyperLogLog, its underlying principles, memory efficiency, typical use cases like UV/PV counting, and provides practical command examples (PFADD, PFCOUNT, PFMERGE) to perform high‑performance cardinality estimation on massive datasets.