Final Class Yiisoft\Cache\Memcached\Memcached

                public function __construct(string $persistentId = '', array $servers = [])
{
    $this->cache = new \Memcached($persistentId);
    $this->initServers($servers, $persistentId);
}

            

                public function clear(): bool
{
    return $this->cache->flush();
}

            

                public function delete(string $key): bool
{
    $this->validateKey($key);
    return $this->cache->delete($key);
}

            

                public function deleteMultiple(iterable $keys): bool
{
    $keys = $this->iterableToArray($keys);
    $this->validateKeys($keys);
    foreach ($this->cache->deleteMulti($keys) as $result) {
        if ($result === false) {
            return false;
        }
    }
    return true;
}

            

                public function get(string $key, mixed $default = null): mixed
{
    $this->validateKey($key);
    $value = $this->cache->get($key);
    if ($this->cache->getResultCode() === \Memcached::RES_SUCCESS) {
        return $value;
    }
    return $default;
}

            

                public function getMultiple(iterable $keys, mixed $default = null): iterable
{
    $keys = $this->iterableToArray($keys);
    $this->validateKeys($keys);
    /** @var array<string, mixed> $values */
    $values = array_fill_keys($keys, $default);
    $valuesFromCache = $this->cache->getMulti($keys);
    foreach ($values as $key => $value) {
        $values[$key] = $valuesFromCache[$key] ?? $value;
    }
    return $values;
}

            

                public function has(string $key): bool
{
    $this->validateKey($key);
    $this->cache->get($key);
    return $this->cache->getResultCode() === \Memcached::RES_SUCCESS;
}

            

                public function set(string $key, mixed $value, null|int|DateInterval $ttl = null): bool
{
    $this->validateKey($key);
    $ttl = $this->normalizeTtl($ttl);
    if ($ttl <= self::TTL_EXPIRED) {
        return $this->delete($key);
    }
    return $this->cache->set($key, $value, $ttl);
}

            

                public function setMultiple(iterable $values, null|int|DateInterval $ttl = null): bool
{
    $values = $this->iterableToArray($values);
    $this->validateKeysOfValues($values);
    return $this->cache->setMulti($values, $this->normalizeTtl($ttl));
}