diff --git a/.idea/.gitignore b/.idea/.gitignore
deleted file mode 100644
index 35410ca..0000000
--- a/.idea/.gitignore
+++ /dev/null
@@ -1,8 +0,0 @@
-# 默认忽略的文件
-/shelf/
-/workspace.xml
-# 基于编辑器的 HTTP 客户端请求
-/httpRequests/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml
diff --git a/.idea/candy.iml b/.idea/candy.iml
deleted file mode 100644
index 5e764c4..0000000
--- a/.idea/candy.iml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="WEB_MODULE" version="4">
-  <component name="Go" enabled="true" />
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index bc415cb..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/candy.iml" filepath="$PROJECT_DIR$/.idea/candy.iml" />
-    </modules>
-  </component>
-</project>
\ No newline at end of file
diff --git a/remind/remind.db b/remind/remind.db
new file mode 100644
index 0000000..c2e965d
Binary files /dev/null and b/remind/remind.db differ
diff --git a/remind/remind.go b/remind/remind.go
index cfef7a1..f3a0004 100644
--- a/remind/remind.go
+++ b/remind/remind.go
@@ -13,7 +13,7 @@ import (
 type Remind struct {
 	db       *stardb.StarDB
 	tasks    map[int]Task
-	mu       sync.RWMutex
+	mu       *sync.RWMutex
 	callback func(remind Task)
 }
 
@@ -52,7 +52,7 @@ func NewRemind(db *stardb.StarDB, callback func(task Task)) (*Remind, error) {
 func innerLoadDB(db *stardb.StarDB, callback func(task Task)) (*Remind, error) {
 	var rem = Remind{
 		db:       db,
-		mu:       sync.RWMutex{},
+		mu:       new(sync.RWMutex),
 		callback: callback,
 		tasks:    make(map[int]Task),
 	}