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redis commands hyperloglog pfcount
PFCOUNT
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|
Redis Regular Inspection / Technical Support
|
Redis Enterprise Server
|
|---|
Get the number of elements
Usage: pfcount key.
The standard error is 1% or less.
Example
| Command> | PFADD hllkey ele1 ele2 ele3 |
| Result> | (integer) 1 |
| Command> | PFADD hllkey ele4 ele5 ele6 |
| Result> | (integer) 1 |
| Command> | PFCOUNT hllkey |
| Result> | (integer) 6 |
Syntax
PFCOUNT key [key ...]
- Available since version 2.8.9.
- Time complexity is O(1).
| << PFADD | PFCOUNT | PFMERGE >> |
|---|
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