diff --git a/src/api.server.ts b/src/api.server.ts
index 41ac70f..40176ff 100644
--- a/src/api.server.ts
+++ b/src/api.server.ts
@@ -10,6 +10,7 @@ import logger from 'logger/logger'
 import { RedisClient } from 'redis/RedisClient'
 import NonceRecordSchedule from 'schedule/noncerecord.schedule'
 import { SyncLocker } from 'common/SyncLocker'
+import CacheSchedule from 'schedule/cache.schedule'
 
 const zReqParserPlugin = require('plugins/zReqParser')
 
@@ -106,6 +107,7 @@ export class ApiServer {
     logger.log('REDIS Connected')
   }
   private initSchedules() {
+    new CacheSchedule().scheduleAll()
     new NonceRecordSchedule().scheduleAll()
   }
 
diff --git a/src/common/LotteryCache.ts b/src/common/LotteryCache.ts
index 83ee02a..26a069a 100644
--- a/src/common/LotteryCache.ts
+++ b/src/common/LotteryCache.ts
@@ -2,9 +2,11 @@ import { singleton } from "decorators/singleton";
 import { LotteryStats } from "models/LotteryStats";
 import { formatDate } from "utils/date.util";
 
+const EXPIRE_TIME = 1000 * 60 * 60;
 @singleton
 export class LotteryCache {
   map: Map<string, typeof LotteryStats> = new Map();
+  lastUsed: Map<string, number> = new Map();
 
   public async getData(user: string, activity: string) {
     const dateTag = formatDate(new Date());
@@ -12,11 +14,19 @@ export class LotteryCache {
       const record = await LotteryStats.insertOrUpdate({user, activity, dateTag}, {})
       this.map.set(user+dateTag, record);
     }
+    this.lastUsed.set(user+dateTag, Date.now());
     return this.map.get(user+dateTag);
   }
   public async flush() {
-    for (let record of this.map.values()) {
-      await record.save();
+    for (let [key, record] of this.map.entries()) {
+      // record.modifiedPaths()
+      if (record.isModified()) {
+        await record.save();
+      }
+      if (Date.now() - this.lastUsed.get(key) > EXPIRE_TIME) {
+        this.map.delete(key);
+        this.lastUsed.delete(key);
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/src/schedule/cache.schedule.ts b/src/schedule/cache.schedule.ts
new file mode 100644
index 0000000..e9c5c1e
--- /dev/null
+++ b/src/schedule/cache.schedule.ts
@@ -0,0 +1,26 @@
+import { LotteryCache } from 'common/LotteryCache';
+import { singleton } from 'decorators/singleton'
+import logger from 'logger/logger';
+import {NonceRecord} from 'models/NonceRecord'
+import * as schedule from 'node-schedule'
+
+/**
+ * 定时更新发送邮件验证码的过期状态
+ */
+@singleton
+export default class CacheSchedule {
+  
+  async updateCache() {
+    try {
+      new LotteryCache().flush();
+    } catch (err) {
+      logger.warn(err)
+    }
+    
+  }
+  scheduleAll() {
+    schedule.scheduleJob('*/10 * * * * *', async () => {
+      await this.updateCache()
+    })
+  }
+}