module Oxblood::Commands::HyperLogLog
Public Instance Methods
pfadd(key, *elements)
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Adds the specified elements to the specified HyperLogLog
. @see redis.io/commands/pfadd
@param [String] key @param [String, Array<String>] elements
@return [Integer] 1 if at least 1 HyperLogLog
internal register was
altered and 0 otherwise.
# File lib/oxblood/commands/hyper_log_log.rb, line 12 def pfadd(key, *elements) run(*elements.unshift(:PFADD, key)) end
pfcount(*keys)
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Return the approximated cardinality of the set(s) observed by the HyperLogLog
at key(s). @see redis.io/commands/pfcount
@param [String, Array<String>] keys
@return [Integer] the approximated number of unique elements observed
via {#pfadd}.
# File lib/oxblood/commands/hyper_log_log.rb, line 24 def pfcount(*keys) run(*keys.unshift(:PFCOUNT)) end
pfmerge(destkey, *sourcekeys)
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Merge N different HyperLogLogs into a single one. @see redis.io/commands/pfmerge
@param [String] destkey @param [String, Array<String>] sourcekeys
@return [String] 'OK'
# File lib/oxblood/commands/hyper_log_log.rb, line 35 def pfmerge(destkey, *sourcekeys) run(*sourcekeys.unshift(:PFMERGE, destkey)) end