设置的过期时间的概念居然是多久没有通过value访问，我以为是从ADD开始的过期时间，是否应该提供一个不会刷新lefespan的读取方法
The concept of the expiration time set is actually how long it has not been accessed through value. I thought it was the expiration time starting from ADD. Should we provide a reading method that will not refresh lefespan?
设置的过期时间的概念居然是多久没有通过value访问，我以为是从ADD开始的过期时间，是否应该提供一个不会刷新lefespan的读取方法
The concept of the expiration time set is actually how long it has not been accessed through value. I thought it was the expiration time starting from ADD. Should we provide a reading method that will not refresh lefespan?