JSON.NUMINCRBY
Syntax
JSON.NUMINCRBY key path value
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
Increment the number value stored at path by number
Required arguments
key
is key to modify.
value
is number value to increment.
Optional arguments
path
is JSONPath to specify. Default is root $.
Return
JSON.NUMINCRBY returns a bulk string reply specified as a stringified new value for each path, or nil, if the matching JSON value is not a number.
For more information about replies, see Redis serialization protocol specification.
Examples
Increment number values
Create a document.
dragonfly> JSON.SET doc . '{"a":"b","b":[{"a":2}, {"a":5}, {"a":"c"}]}'
OK
Increment a value of a object by 2. The command fails to find a number and returns null.
dragonfly> JSON.NUMINCRBY doc $.a 2
"[null]"
Recursively find and increment a value of all a objects. The command increments numbers it finds and returns null for nonnumber values.
dragonfly> JSON.NUMINCRBY doc $..a 2
"[null,4,7,null]"
See also
JSON.ARRINDEX | JSON.ARRINSERT