SDK
SDK Javascript v5.x
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# decrby

Decrements the number stored at key by a provided integer value. If the key does not exist, it is set to 0 before performing the operation.

[Redis documentation]


# decrby(key, value, [options], [callback])

Arguments Type Description
key string Key identifier
value int Decrement value
options JSON Object Optional parameters
callback function Callback

# Options

Option Type Description Default
queuable boolean Make this request queuable or not true

# Return Value

Returns the MemoryStorage object to allow chaining.


# Callback Response

Returns an integer containing the updated key value.

# Usage

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.decrby('key', 42, function (err, value) {
  // callback called once the action has completed
});
// Using promises (NodeJS only)
kuzzle.memoryStorage.decrbyPromise('key', 42)
  .then(value => {
    // resolved once the action has completed
  });

Callback response:

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