如何获得每个项目的最新10位访客

Question

I have a web application now. I just to want to get latest 10 visitor who have seen some specify item. But I do not want to save all the visit info to mysql. Is there any better way to implement the feature?

As I am using redis, dose redis have some feature to support such situation?

Answer 1

您可以将每个项目的最新查看器作为列表存储在Redis中，并通过在其上使用LTRIM将每个列表保留为恰好有10个访问者。