Adam Sampson's cardinality bookmarkshttps://bookmarks.offog.org/ats/cardinalityAdam Sampson2014-05-29T15:26:39ZRedis new data structure: the HyperLogLog - Antirez webloghttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fantirez.com%2Fnews%2F752014-05-29T15:26:39ZA neat algorithm for counting large sets of items using a small data structure, using hashing and some intelligent statistics.