OxiMem, OxiDB's in-memory engine, now speaks PFADD, PFCOUNT and PFMERGE. How HyperLogLog works in detail, OxiMem's ASCII encoding and what it costs, the speedups, and side-by-side measurements against Redis 8.6.1: identical estimates, 3 to 5 times faster multi-key counts, and Redis level or ahead on single-key work.
$ ls tags/hyperloglog
#hyperloglog
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