CMS.INITBYPROB

CMS.INITBYPROB key error probability

Available in:

Redis Open Source / Bloom 2.0.0

Time complexity:

O(1)

ACL categories:

@cms, @write, @fast,

Compatibility:

Redis Enterprise and Redis Cloud compatibility

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

Redis Enterprise and Redis Cloud compatibility

Return information