diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
index 712ab9d..2e1bf07 100644
--- a/.idea/jarRepositories.xml
+++ b/.idea/jarRepositories.xml
@@ -16,5 +16,10 @@
       <option name="name" value="JBoss Community repository" />
       <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="http://maven.aliyun.com/nexus/content/groups/public" />
+    </remote-repository>
   </component>
 </project>
\ No newline at end of file
diff --git a/docs/v220/more.md b/docs/v220/more.md
index ec95a8a..3858d63 100644
--- a/docs/v220/more.md
+++ b/docs/v220/more.md
@@ -15,6 +15,8 @@ v2.2.0开始支持数据库存储接口信息功能，可在内存和数据库
 
 > ko-time.saver=redis
 > 
+> ko-time.data-prefix=xxx #如果多个项目共用一个redis，最好配置此项，通过该名称区分数据
+> 
 > #redis配置
 > 
 > spring.redis.host: xxx