CF.COMPACT

Syntax

CF.COMPACT key

Time complexity: O(k), where k is the number of sub-filters

ACL categories: @cuckoo

Attempts to compact the Cuckoo filter at key by consolidating its sub-filters.

When a filter expands, older sub-filters are kept around until CF.DEL empties them out. CF.DEL already triggers this automatically once deletions exceed 10% of the items in the filter, so CF.COMPACT mainly exists to force the pass on demand, for example after a batch of deletions.

Return

Simple string reply: OK.

Error reply: if key does not exist or is not a Cuckoo filter.

Examples

dragonfly> CF.RESERVE cf 4
OK

dragonfly> CF.ADD cf Hello
(integer) 1

dragonfly> CF.DEL cf Hello
(integer) 1

dragonfly> CF.COMPACT cf
OK

dragonfly> CF.COMPACT no_such_key
(error) no such key

See also

CF.DEL | CF.RESERVE | CF.INFO