CMS.INITBYPROB

Syntax
CMS.INITBYPROB key error probability
Available in:
Redis Open Source / Bloom 2.0.0
Time complexity:
O(1)
ACL categories:
@cms, @write, @fast,

Initializes a Count-Min Sketch to accommodate requested tolerances.

Parameters:

  • key: The name of the sketch.
  • error: Estimate size of error. The error is a percent of total counted items. This effects the width of the sketch.
  • probability: The desired probability for inflated count. This should be a decimal value between 0 and 1. This effects the depth of the sketch. For example, for a desired false positive rate of 0.1% (1 in 1000), error_rate should be set to 0.001. The closer this number is to zero, the greater the memory consumption per item and the more CPU usage per operation.

Examples 

redis> CMS.INITBYPROB test 0.001 0.01
OK

Return information

One of the following:

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