redis - 个性化推荐中'已读'和'未读'如何实现？

Question

个性化推荐中，'已读'用redis或memcache缓存,是不是每增加一个用户，就得设置一个key？

Answer 1

There must be a unique key to identify this user. You'd better add a prefix to match the user ID to distinguish each user. For example, if you have read, use the read link user ID to identify this user