Report the length of the JSON String at path in key
key
is key to parse.
path
is JSONPath to specify. Default is root $, if not provided. Returns null if the key or path do not exist.
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.
{{< highlight bash >}} 127.0.0.1:6379> JSON.SET doc $ '{"a":"foo", "nested": {"a": "hello"}, "nested2": {"a": 31}}' OK 127.0.0.1:6379> JSON.STRLEN doc $..a
- (integer) 3
- (integer) 5
- (nil) {{< / highlight >}}
JSON.ARRLEN | JSON.ARRINSERT