diff --git a/HttpServer/Abstracts/Callback.php b/HttpServer/Abstracts/Callback.php
index 899f944d..5bef5f09 100644
--- a/HttpServer/Abstracts/Callback.php
+++ b/HttpServer/Abstracts/Callback.php
@@ -4,13 +4,17 @@ declare(strict_types=1);
 namespace HttpServer\Abstracts;
 
 
+use Database\Connection;
 use Exception;
 use PHPMailer\PHPMailer\PHPMailer;
 use PHPMailer\PHPMailer\SMTP;
+use ReflectionException;
 use Snowflake\Abstracts\Config;
 use Snowflake\Error\Logger;
 use Snowflake\Event;
+use Snowflake\Exception\ComponentException;
 use Snowflake\Exception\ConfigException;
+use Snowflake\Exception\NotFindClassException;
 use Snowflake\Snowflake;
 use Swoole\Coroutine\Server;
 use Swoole\Timer;
@@ -132,4 +136,39 @@ abstract class Callback extends HttpService
 		}
 	}
 
+
+	/**
+	 * @throws ConfigException
+	 * @throws ComponentException
+	 * @throws Exception
+	 */
+	protected function clearMysqlClient()
+	{
+		$databases = Config::get('databases', false, []);
+		if (empty($databases)) {
+			return;
+		}
+		$application = Snowflake::app();
+		foreach ($databases as $name => $database) {
+			/** @var Connection $connection */
+			$connection = $application->get('databases.' . $name, false);
+			if (empty($connection)) {
+				continue;
+			}
+			$connection->disconnect();
+		}
+	}
+
+
+	/**
+	 * @throws ConfigException
+	 * @throws ComponentException
+	 * @throws Exception
+	 */
+	protected function clearRedisClient()
+	{
+		$redis = Snowflake::app()->getRedis();
+		$redis->destroy();
+	}
+
 }
diff --git a/HttpServer/Events/OnBeforeReload.php b/HttpServer/Events/OnBeforeReload.php
index 34e52064..bb0046eb 100644
--- a/HttpServer/Events/OnBeforeReload.php
+++ b/HttpServer/Events/OnBeforeReload.php
@@ -25,6 +25,9 @@ class OnBeforeReload extends Callback
 	{
 		$event = Snowflake::app()->getEvent();
 		$event->trigger(Event::SERVER_BEFORE_RELOAD, [$server]);
+
+		$this->clearMysqlClient();
+		$this->clearRedisClient();
 	}
 
 }
diff --git a/System/Abstracts/Pool.php b/System/Abstracts/Pool.php
index d953c3a7..99a36fe1 100644
--- a/System/Abstracts/Pool.php
+++ b/System/Abstracts/Pool.php
@@ -146,19 +146,13 @@ abstract class Pool extends Component
 	/**
 	 * @param $name
 	 * @param mixed $callback
-	 * @throws ComponentException
 	 * @throws Exception
 	 */
 	private function createByCallback($name, mixed $callback)
 	{
-//		if ($this->creates === -1 && !is_callable($callback)) {
-//			$this->creates = $creates = Timer::tick(1000, [$this, 'Heartbeat_detection']);
-//
-//			$event = Snowflake::app()->getEvent();
-//			$event->on(Event::SERVER_WORKER_STOP, function () use ($creates) {
-//				Timer::clear($creates);
-//			});
-//		}
+		if ($this->creates === -1 && !is_callable($callback)) {
+			$this->creates = $creates = Timer::tick(1000, [$this, 'Heartbeat_detection']);
+		}
 		if (!Context::hasContext('create::client::ing::' . $name)) {
 			$this->push($name, $this->createClient($name, $callback));
 			Context::remove('create::client::ing::' . $name);
@@ -283,6 +277,7 @@ abstract class Pool extends Component
 	 */
 	public function clean(string $name)
 	{
+		Timer::clear($this->creates);
 		if (!Context::inCoroutine() || !isset($this->_items[$name])) {
 			return;
 		}
diff --git a/System/Di/Service.php b/System/Di/Service.php
index e60116c2..52d3e53d 100644
--- a/System/Di/Service.php
+++ b/System/Di/Service.php
@@ -24,127 +24,132 @@ use Snowflake\Snowflake;
 class Service extends Component
 {
 
-    private array $_components = [];
+	private array $_components = [];
 
 
-    private array $_definition = [];
+	private array $_definition = [];
 
 
-    protected array $_alias = [];
+	protected array $_alias = [];
 
-    /**
-     * @param $id
-     *
-     * @return mixed
-     * @throws
-     */
-    public function get($id): mixed
-    {
-        if (isset($this->_components[$id])) {
-            return $this->_components[$id];
-        }
-        if (!isset($this->_definition[$id]) && !isset($this->_alias[$id])) {
-            throw new ComponentException("Unknown component ID: $id");
-        }
-        if (isset($this->_definition[$id])) {
-            $config = $this->_definition[$id];
-            if (is_object($config)) {
-                return $this->_components[$id] = $config;
-            }
-            $object = Snowflake::createObject($config);
-        } else {
-            $config = $this->_alias[$id];
+	/**
+	 * @param $id
+	 * @param bool $try
+	 * @return mixed
+	 * @throws ComponentException
+	 * @throws NotFindClassException
+	 * @throws ReflectionException
+	 */
+	public function get($id, $try = true): mixed
+	{
+		if (isset($this->_components[$id])) {
+			return $this->_components[$id];
+		}
+		if (!isset($this->_definition[$id]) && !isset($this->_alias[$id])) {
+			if ($try === false) {
+				return null;
+			}
+			throw new ComponentException("Unknown component ID: $id");
+		}
+		if (isset($this->_definition[$id])) {
+			$config = $this->_definition[$id];
+			if (is_object($config)) {
+				return $this->_components[$id] = $config;
+			}
+			$object = Snowflake::createObject($config);
+		} else {
+			$config = $this->_alias[$id];
 
-            $object = Snowflake::createObject($config);
-        }
-        return $this->_components[$id] = $object;
-    }
+			$object = Snowflake::createObject($config);
+		}
+		return $this->_components[$id] = $object;
+	}
 
-    /**
-     * @param string $className
-     * @param string $alias
-     */
-    public function setAlias(string $className, string $alias)
-    {
-        $this->_alias[$className] = $alias;
-    }
+	/**
+	 * @param string $className
+	 * @param string $alias
+	 */
+	public function setAlias(string $className, string $alias)
+	{
+		$this->_alias[$className] = $alias;
+	}
 
-    /**
-     * @param $id
-     * @param $definition
-     *
-     * @return mixed
-     * @throws ComponentException
-     * @throws ReflectionException
-     * @throws NotFindClassException
-     */
-    public function set($id, $definition): mixed
-    {
-        if ($definition === NULL) {
-            return $this->remove($id);
-        }
-        unset($this->_components[$id]);
-        if (is_object($definition) || is_callable($definition, TRUE)) {
-            return $this->_definition[$id] = $definition;
-        } else if (!is_array($definition)) {
-            throw new ComponentException("Unexpected configuration type for the \"$id\" component: " . gettype($definition));
-        }
-        if (!isset($definition['class'])) {
-            throw new ComponentException("The configuration for the \"$id\" component must contain a \"class\" element.");
-        } else {
-            $this->_definition[$id] = $definition;
-        }
-        return $this->get($id);
-    }
+	/**
+	 * @param $id
+	 * @param $definition
+	 *
+	 * @return mixed
+	 * @throws ComponentException
+	 * @throws ReflectionException
+	 * @throws NotFindClassException
+	 */
+	public function set($id, $definition): mixed
+	{
+		if ($definition === NULL) {
+			return $this->remove($id);
+		}
+		unset($this->_components[$id]);
+		if (is_object($definition) || is_callable($definition, TRUE)) {
+			return $this->_definition[$id] = $definition;
+		} else if (!is_array($definition)) {
+			throw new ComponentException("Unexpected configuration type for the \"$id\" component: " . gettype($definition));
+		}
+		if (!isset($definition['class'])) {
+			throw new ComponentException("The configuration for the \"$id\" component must contain a \"class\" element.");
+		} else {
+			$this->_definition[$id] = $definition;
+		}
+		return $this->get($id);
+	}
 
-    /**
-     * @param $id
-     * @return bool
-     */
-    public function has($id): bool
-    {
-        return isset($this->_definition[$id]) || isset($this->_components[$id]) || isset($this->_alias[$id]);
-    }
+	/**
+	 * @param $id
+	 * @return bool
+	 */
+	public function has($id): bool
+	{
+		return isset($this->_definition[$id]) || isset($this->_components[$id]) || isset($this->_alias[$id]);
+	}
 
-    /**
-     * @param array $data
-     * @throws Exception
-     */
-    public function setComponents(array $data)
-    {
-        foreach ($data as $key => $val) {
-            $this->set($key, $val);
-        }
-    }
+	/**
+	 * @param array $data
+	 * @throws Exception
+	 */
+	public function setComponents(array $data)
+	{
+		foreach ($data as $key => $val) {
+			$this->set($key, $val);
+		}
+	}
 
 
-    /**
-     * @param $name
-     * @return mixed
-     * @throws Exception
-     */
-    public function __get($name): mixed
-    {
-        if ($this->has($name)) {
-            return $this->get($name);
-        }
+	/**
+	 * @param $name
+	 * @return mixed
+	 * @throws Exception
+	 */
+	public function __get($name): mixed
+	{
+		if ($this->has($name)) {
+			return $this->get($name);
+		}
 
-        return parent::__get($name);
-    }
+		return parent::__get($name);
+	}
 
-    /**
-     * @param $id
-     * @return bool
-     */
-    public function remove($id): bool
-    {
-        unset($this->_components[$id]);
-        unset($this->_definition[$id]);
-        if (isset($this->_alias[$id])) {
-            unset($this->_components[$this->_alias[$id]]);
-            unset($this->_definition[$this->_alias[$id]]);
-            unset($this->_alias[$id]);
-        }
-        return $this->has($id);
-    }
+	/**
+	 * @param $id
+	 * @return bool
+	 */
+	public function remove($id): bool
+	{
+		unset($this->_components[$id]);
+		unset($this->_definition[$id]);
+		if (isset($this->_alias[$id])) {
+			unset($this->_components[$this->_alias[$id]]);
+			unset($this->_definition[$this->_alias[$id]]);
+			unset($this->_alias[$id]);
+		}
+		return $this->has($id);
+	}
 }