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JSON.DEBUG MEMORY

Syntax
JSON.DEBUG MEMORY key [path]
Available in:
Redis Open Source / JSON 1.0.0
Time complexity:
O(N) when path is evaluated to a single value, where N is the size of the value, O(N) when path is evaluated to multiple values, where N is the size of the key
ACL categories:
@json, @read,
Compatibility:
Redis Enterprise and Redis Cloud compatibility

Report a value's memory usage in bytes

Warning:
The actual total memory consumption by a key could be much lower than the value reported by this command because of an internal JSON string reuse mechanism. For more information, see the JSON memory usage page.

Examples

Required arguments

key

is key to parse.

Optional arguments

path

is JSONPath to specify. Default is root $.

Examples

Report a value's memory usage in bytes

Create a JSON document.

redis> JSON.SET item:2 $ '{"name":"Wireless earbuds","description":"Wireless Bluetooth in-ear headphones","connection":{"wireless":true,"type":"Bluetooth"},"price":64.99,"stock":17,"colors":["black","white"], "max_level":[80, 100, 120]}'
OK

Get the values' memory usage in bytes.

redis> JSON.DEBUG MEMORY item:2
(integer) 573

Redis Enterprise and Redis Cloud compatibility

Redis
Enterprise		 Redis
Cloud		 Notes
✅ Supported
 ✅ Flexible & Annual
✅ Free & Fixed

Return information

Integer reply: the value size in bytes.

See also

JSON.SET | JSON.ARRLEN

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