src/cache/Apcu.php
public function get($id, $default = NULL) {
        $data = \apcu_fetch($this->_sanitize_id($id), $success);

        return $success ? $data : $default;
    }
public function get($id, $default = NULL) {
        $data = \apcu_fetch($this->_sanitize_id($id), $success);

        return $success ? $data : $default;
    }
Retrieve a cached value entry by id.

// Retrieve cache entry from apc group
$data = Cache::instance('apc')->get('foo');

// Retrieve cache entry from apc group and return 'bar' if miss
$data = Cache::instance('apc')->get('foo', 'bar');

@param   string $id id of cache to entry
@param   string $default default value to return if cache miss
@return  mixed
@throws  CacheException