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JSON.STRLEN

Syntax​

JSON.STRLEN key [path]

Time complexity: O(1) when path is evaluated to a single value, O(N) when path is evaluated to multiple values, where N is the size of the key

Report the length of the JSON String at path in key

Examples

Required arguments​

key

is key to parse.

Optional arguments​

path

is JSONPath to specify. Default is root $, if not provided. Returns null if the key or path do not exist.

Return​

JSON.STRLEN returns by recursive descent an array of integer replies for each path, the array's length, or nil, if the matching JSON value is not a string. For more information about replies, see Redis serialization protocol specification.

Examples​

dragonfly> JSON.SET doc $ '{"a":"foo", "nested": {"a": "hello"}, "nested2": {"a": 31}}'
OK
dragonfly> JSON.STRLEN doc $..a
1) (integer) 3
2) (integer) 5
3) (nil)

See also​

JSON.ARRLEN | JSON.ARRINSERT