diff --git a/score/Core/App.php b/score/Core/App.php
index dcc5d057..7b98d24e 100755
--- a/score/Core/App.php
+++ b/score/Core/App.php
@@ -144,13 +144,12 @@ public function catch() {
 	 * @param	boolean $prepend
 	 * @return	void
 	 */
-	public function afterRequest(callable $callback, $prepend = true) {
+	public function afterRequest(callable $callback, $prepend = false) {
 		if(is_callable($callback)) {
 			Hook::addHook(Hook::HOOK_AFTER_REQUEST, $callback, $prepend);
 		}else {
 			throw new \Exception(__NAMESPACE__.'::'.__function__.' the first param of type is callable');
 		}
-		
 	}
 
 	/**
diff --git a/score/Core/Cache/Redis.php b/score/Core/Cache/Predis.php
old mode 100755
new mode 100644
similarity index 99%
rename from score/Core/Cache/Redis.php
rename to score/Core/Cache/Predis.php
index 90d6c44c..3247ae7e
--- a/score/Core/Cache/Redis.php
+++ b/score/Core/Cache/Predis.php
@@ -13,7 +13,7 @@
 
 use  Predis\Client;
 
-class Redis {
+class Predis {
     
 	/**
 	 * $Predis redis实例
diff --git a/score/Core/Crontab/AbstractCronController.php b/score/Core/Crontab/AbstractCronController.php
index 57a3ff9f..fe2823f9 100644
--- a/score/Core/Crontab/AbstractCronController.php
+++ b/score/Core/Crontab/AbstractCronController.php
@@ -38,7 +38,7 @@ abstract class AbstractCronController extends ProcessController {
      * runCron 
      * @param  string  $expression cron的表达式
      * @param  callable $func   闭包函数
-     * @return [type] [description]
+     * @return void
      */
     public function runCron(string $expression, $func = null) {
     	$expression_key = md5($expression);
diff --git a/score/Core/Db/Mysql.php b/score/Core/Db/Mysql.php
index c156c87d..72d94d13 100755
--- a/score/Core/Db/Mysql.php
+++ b/score/Core/Db/Mysql.php
@@ -129,6 +129,8 @@ public function setConfig(array $config = []) {
 			$this->config = array_merge($this->default_config, $this->config);
 			Db::setConfig($this->config);
 		}
+		// set hook call
+		Application::getApp()->afterRequest([$this,'clear']);
 	}
 
 	/**
@@ -246,8 +248,6 @@ public function selectMysql(array $extension = []) {
 	public function __call($method, $args) {
 		$this->setConfig();
 		$this->setCacheHandler();
-		// set hook call
-		Application::getApp()->afterRequest([$this,'clear']);
 		return Db::$method($args);
 	}
 
diff --git a/score/Core/Memory/ChannelManager.php b/score/Core/Memory/ChannelManager.php
index b05d3a8c..80db5f7d 100644
--- a/score/Core/Memory/ChannelManager.php
+++ b/score/Core/Memory/ChannelManager.php
@@ -22,7 +22,7 @@ class ChannelManager {
      * @param  string  $name
      * @param  int  $size
      */
-    public function addChannel(string $name, int $size = 1024 * 256) {
+    public function addChannel(string $name, int $size = 256 * 1024) {
         if(!isset($this->list[$name])) {
             $chan = new \Swoole\Channel($size);
             $this->list[$name] = $chan;
diff --git a/score/Core/Pools/PoolsManager.php b/score/Core/Pools/PoolsManager.php
index 3b4e1b44..40227014 100644
--- a/score/Core/Pools/PoolsManager.php
+++ b/score/Core/Pools/PoolsManager.php
@@ -403,7 +403,7 @@ public static function readByProcessName(string $name, float $timeOut = 0.1) {
      * getProcessInWorker 获取一个worker进程内的所有的PoolsProcess进程
      * @return   array
      */
-    public function getProcessInWorker() {
+    public static function getProcessInWorker() {
         return self::$processList;
     }
 
@@ -411,8 +411,8 @@ public function getProcessInWorker() {
      * killProcessInWorker 在一个worker内的PoolsProcess的进程退出，主要在workerstop中使用，由于PoolsProcess是产生于worker进程的，worker作为父进程，在退出是必须将子进程退出，否则成僵尸进程
      * @return  bool
      */
-    public function killProcessInWorker() {
-        $processList = $this->getProcessInWorker();
+    public static function killProcessInWorker() {
+        $processList = self::getProcessInWorker();
         if($processList) {
             foreach($processList as $process) {
                 $pid = $process->getPid();
@@ -421,6 +421,5 @@ public function killProcessInWorker() {
             }
         }
         return true; 
-        
     }
 }
\ No newline at end of file