Redis Key Set Expiration time

A recent project needs to use the results of the storm calculation of Redis storage, and I was intrigued by the fact that my redis use memory space has been growing, because I have set the expiry time of key.

The last look at the code only found the problem. It turns out that I have a problem calling the expire () method call order in the code first.

Expire (Key,time) if the current Redis does not have this key, it is not operated by default. Ah, write code must be rigorous

Redis Key Set Expiration time