cache life time

[syrakozz]

can you please add an expire life time for the caching object

[devxoul]

You can set ageLimit to do this.

[PrideChung]

@devxoul But how can I set the age limit per object?

[landfound]

Yes, I also seek the feature. create time and last modify time is needed like mysql orm. thx

[prrane]

I am done with my take on this issue and raised a pull request #77