On Stack Overflow, the profile page lists a "last seen" property. This doesn't seem to be updated on every page view (for performance reasons, obviously). How would you implement it in a heavy-traffic web app? Would you update it only on certain pages? Or cache the last time you logged the user's last visit and wait a specific amount of time before updating the database? Or something completely different?On Stack Overflow, the profile page lists a "la
阅读背景：
您将如何为用户实现“上次看到”的功能？
来源：互联网
分享到：
