/**
* Increment the value of an item in the cache.
*
* @param string $key
* @param mixed $value
*
* @return void
*/
public function decrement($key, $value = 1)
{
$this->connection->transaction(function () use($key, $value) {
return $this->incrementOrDecrement($key, $value, function ($current) use($value) {
return $current - $value;
});
});
}
/**
* Increment or decrement an item in the cache.
*
* @param string $key
* @param mixed $value
* @param \Closure $callback
* @return int|bool
*/
protected function incrementOrDecrement($key, $value, Closure $callback)
{
return $this->connection->transaction(function () use($key, $value, $callback) {
$prefixed = $this->prefix . $key;
$cache = $this->table()->where('key', $prefixed)->lockForUpdate()->first();
if (is_null($cache)) {
return false;
}
$current = $this->encrypter->decrypt($cache->value);
$new = $callback($current, $value);
if (!is_numeric($current)) {
return false;
}
$this->table()->where('key', $prefixed)->update(['value' => $this->encrypter->encrypt($new)]);
return $new;
});
}
