diff --git a/README.md b/README.md
index 15da272..c416fa0 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ Features:
 * lua-cjson 
 * redis
 
-> > 注意：建议选用openresty最新版，但是从openresty-1.9.15.1开始，lua-resty-core有些api变更，因此建议先使用openresty-1.9.7.5及以下，原因是：[必读](https://github.com/CNSRE/ABTestingGateway/issues/27#issuecomment-236149255)
+> > 注意：建议选用openresty最新版，但是从openresty-1.9.15.1开始，lua-resty-core有些api变更，因此建议先使用openresty-1.9.7.5，原因是：[必读](https://github.com/CNSRE/ABTestingGateway/issues/27#issuecomment-236149255)
 
 > > 注意：tengine用户仍然可以使用本项目，只需要从openresty软件包中获取最新的ngx_lua、LuaJIT以及lua-cjson等，并注意：[必读](https://github.com/CNSRE/ABTestingGateway/issues/27#issuecomment-236149255) 
 
@@ -72,7 +72,7 @@ repo中的`utils/conf`文件夹中有灰度系统部署所需的最小示例
 
 ```bash
 1. git clone https://github.com/SinaMSRE/ABTestingGateway
-2. cd /path/to/ABTestingGateway/utils
+2. cd /path/to/ABTestingGateway/utils && mkdir logs
 
 # 启动redis数据库
 3. redis-server conf/redis.conf 
diff --git a/lib/abtesting/adapter/policy.lua b/lib/abtesting/adapter/policy.lua
index b3333a1..1325535 100644
--- a/lib/abtesting/adapter/policy.lua
+++ b/lib/abtesting/adapter/policy.lua
@@ -106,7 +106,7 @@ _M.del = function(self, id)
     local database      = self.database
     local baseLibrary   = self.baseLibrary
 
-    local policyLib = baseLibrary .. ':' .. id 
+    local policyLib = baseLibrary .. ':' .. id .. ':'
 
     local keys, err = database:keys(policyLib..'*')
     if not keys then
diff --git a/utils/conf/default.conf b/utils/conf/default.conf
index 1fc91bc..6de632a 100644
--- a/utils/conf/default.conf
+++ b/utils/conf/default.conf
@@ -21,7 +21,7 @@ server {
 
 	set $redis_host '127.0.0.1';
 	set $redis_port '6379';
-	set $redis_uds '/tmp/redis.sock';
+	set $redis_uds '/var/run/redis.sock';
 	set $redis_connect_timeout 10000;
 	set $redis_dbid 0;
 
diff --git a/utils/conf/redis.conf b/utils/conf/redis.conf
index 4b99b22..f8154ab 100644
--- a/utils/conf/redis.conf
+++ b/utils/conf/redis.conf
@@ -33,7 +33,7 @@ port 6379
 # incoming connections. There is no default, so Redis will not listen
 # on a unix socket when not specified.
 #
-unixsocket /tmp/redis.sock
+unixsocket /var/run/redis.sock
 unixsocketperm 766
 
 # Close the connection after a client is idle for N seconds (0 to disable)
diff --git a/utils/conf/vhost.conf b/utils/conf/vhost.conf
index 564b41d..8868bf1 100644
--- a/utils/conf/vhost.conf
+++ b/utils/conf/vhost.conf
@@ -17,7 +17,7 @@ server {
 
 	set $redis_host '127.0.0.1';
 	set $redis_port '6379';
-	set $redis_uds '/tmp/redis.sock';
+	set $redis_uds '/var/run/redis.sock';
 	set $redis_connect_timeout 10000;
 	set $redis_dbid 0;
 	set $redis_pool_size 1000;
diff --git a/utils/stop-all-nginx.sh b/utils/stop-all-nginx.sh
new file mode 100644
index 0000000..f2e3133
--- /dev/null
+++ b/utils/stop-all-nginx.sh
@@ -0,0 +1,8 @@
+rm *temp -rf
+
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/nginx.conf  -s stop
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/stable.conf -s stop
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/beta1.conf  -s stop
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/beta2.conf  -s stop
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/beta3.conf  -s stop
+/usr/local/nginx/sbin/nginx -p `pwd` -c conf/beta4.conf  -s stop