Should each Async::Task have it's own Async::DNS::Resolver object or can they be shared between tasks?

[postmodern]

I'm curious whether it's a best practice to initialize a separate Async::DNS::Resolver per-Async::Task or whether a single instance can be shared between multiple Async tasks without causing any blocking or resource contention? The answer to this question will influence the architecture of my Async queue and worker classes.