Syntax and Commands
Redis provides simple and intuitive commands to work with HyperLogLog:
PFADD key element [element ...]: Adds elements to the HyperLogLog data structure associated with the given key.PFCOUNT key [key ...]: Returns the approximated cardinality of the HyperLogLog data structure associated with the given keys.PFMERGE destkey sourcekey [sourcekey ...]: Merges multiple HyperLogLogs into a single one, stored indestkey.
Complete tutorial on HyperLogLog in redis
Redis HyperLogLog is a powerful probabilistic data structure used for approximating the cardinality of a set. It efficiently estimates the number of unique elements in a large dataset, making it ideal for applications where memory efficiency and speed are crucial. In this article, we will explore what Redis HyperLogLog is, its syntax, and commands, and provide examples of how to use it in real-world scenarios.
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