TOPK.INFO

Returns number of required items (k), width, depth, and decay values of a given sketch.

Parameters

• key: the name of the sketch.

Examples

TOPK.INFO topk
1) k
2) (integer) 50
3) width
4) (integer) 2000
5) depth
6) (integer) 7
7) decay
8) "0.92500000000000004"

Redis Software and Redis Cloud compatibility

| Redis Software | Redis Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> | |:----------------------|:-----------------|:------| | <span title="Supported">✅ Supported</span> | <span title="Supported">✅ Flexible & Annual</span> <span title="Supported">✅ Free & Fixed</nobr></span> | |

Return information

{{< multitabs id="topk-info-return-info" tab1="RESP2" tab2="RESP3" >}}

One of the following:

• [Array reply]({{< relref "/develop/reference/protocol-spec#arrays" >}}) of [simple string]({{< relref "/develop/reference/protocol-spec#simple-strings" >}}) and [integer]({{< relref "/develop/reference/protocol-spec#integers" >}}) pairs. For decay, a [simple string reply]({{< relref "/develop/reference/protocol-spec#simple-strings" >}}) is used to represent the floating point value.
• [Simple error reply]({{< relref "/develop/reference/protocol-spec#simple-errors" >}}) in these cases: incorrect number of arguments, non-existant key, or key of the incorrect type.

-tab-sep-

One of the following:

• [A map]({{< relref "/develop/reference/protocol-spec#maps" >}}) of [simple string]({{< relref "/develop/reference/protocol-spec#simple-strings" >}}) and [integer]({{< relref "/develop/reference/protocol-spec#integers" >}}) pairs. For decay, a [double reply]({{< relref "/develop/reference/protocol-spec#doubles" >}}) is used to represent the floating point value.
• [Simple error reply]({{< relref "/develop/reference/protocol-spec#simple-errors" >}}) in these cases: incorrect number of arguments, non-existant key, or key of the incorrect type.

{{< /multitabs >}}