Stash\Item::executeSet PHP Method

    private function executeSet($data, $time)
    {
        if ($this->isDisabled() || !isset($this->key)) {
            return false;
        }
        $store = array();
        $store['return'] = $data;
        $store['createdOn'] = time();
        if (isset($time) && $time instanceof \DateTime) {
            $expiration = $time->getTimestamp();
            $cacheTime = $expiration - $store['createdOn'];
        } else {
            $cacheTime = self::$cacheTime;
        }
        $expiration = $store['createdOn'] + $cacheTime;
        if ($cacheTime > 0) {
            $expirationDiff = rand(0, floor($cacheTime * 0.15));
            $expiration -= $expirationDiff;
        }
        if ($this->stampedeRunning === true) {
            $spkey = $this->key;
            $spkey[0] = 'sp';
            // change "cache" data namespace to stampede namespace
            $this->driver->clear($spkey);
            $this->stampedeRunning = false;
        }
        return $this->driver->storeData($this->key, $store, $expiration);
    }