[Question] Reuse decorator settings + Race Conditions

[Wyko]

I'm trying out this package for the first time today, and I'm trying to understand some things. I'd appreciate the answer to the following:

1. Is there any way to set class defaults for the cached decorator so that I don't need to set the parameters each time I use it? I didn't see anything in the examples for this.
2. Is there any potential for race conditions when using any of the different cache options? I saw that the simple memory option had the interesting caveat about mutable objects, which makes me wonder.

Thanks!