1.关闭续订前七天邮件提醒

2.优化订阅邮件提醒，向redis存储已发送的邮件类型

src/main/java/com/ai/da/common/utils/RedisUtil.java

@@ -84,8 +84,10 @@ public class RedisUtil {
     /**
      * 将数据放入set缓存
      */
-    public void addToSet(String key, String value) {
+    public void addToSet(String key, String value, Long expiresIn) {
         redisTemplate.opsForSet().add(key, value);
+        // 设置过期时间
+        redisTemplate.expire(key, expiresIn, TimeUnit.SECONDS);
     }
 
     /**
@@ -302,4 +304,5 @@ public class RedisUtil {
     }
 
     public final static String STRIPE_EXCEPTION_LOG = "StripeException:";
+    public final static String SUBSCRIPTION_SENT_EMAIL_TYPE = "SubscriptionEmailSentType:";
 }