fixed user 登录更新时间改为5分钟更新一次

app/models/user.rb

@@ -692,7 +692,11 @@ class User < Owner
   # Returns the user who matches the given autologin +key+ or nil
   def self.try_to_autologin(key)
     user = Token.find_active_user('autologin', key)
-    user.update(last_login_on: Time.now) if user
+    if user
+      Rails.cache.fetch("user::update::last_login_on::#{user.id}",:expires_in => 5.minutes) do
+        user.update(last_login_on: Time.now)
+      end
+    end
     user
   end