incr

Increments the number stored at key by 1. If the key does not exist, it is set to 0 before performing the operation.

[Redis documentation]


incr(key, [options], [callback])

Arguments Type Description
key string Key identifier
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.incr('key', function (err, value) {
  // callback called once the action has completed
});

// Using promises (NodeJS only)
kuzzle.memoryStorage.incrPromise('key')
  .then(value => {
    // resolved once the action has completed
  });

Callback response:

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