TDIGEST.INFO
Syntax
TDIGEST.INFO key
- Available in:
- Redis Open Source / Bloom 2.4.0
- Time complexity:
- O(1)
- ACL categories:
@tdigest,@read,
Returns information and statistics about a t-digest sketch.
Required arguments
key
is key name for an existing t-digest sketch.
Return value
Array reply with information about the sketch (name-value pairs):
| Name Simple string reply | Description |
|---|---|
Compression | Integer reply The compression (controllable trade-off between accuracy and memory consumption) of the sketch |
Capacity | Integer reply Size of the buffer used for storing the centroids and for the incoming unmerged observations |
Merged nodes | Integer reply Number of merged observations |
Unmerged nodes | Integer reply Number of buffered nodes (uncompressed observations) |
Merged weight | Integer reply Weight of values of the merged nodes |
Unmerged weight | Integer reply Weight of values of the unmerged nodes (uncompressed observations) |
Observations | Integer reply Number of observations added to the sketch |
Total compressions | Integer reply Number of times this sketch compressed data together |
Memory usage | Integer reply Number of bytes allocated for the sketch |
Examples
redis> TDIGEST.CREATE t
OK
redis> TDIGEST.ADD t 1 2 3 4 5
OK
redis> TDIGEST.INFO t
1) Compression
2) (integer) 100
3) Capacity
4) (integer) 610
5) Merged nodes
6) (integer) 0
7) Unmerged nodes
8) (integer) 5
9) Merged weight
10) (integer) 0
11) Unmerged weight
12) (integer) 5
13) Observations
14) (integer) 5
15) Total compressions
16) (integer) 0
17) Memory usage
18) (integer) 9768