The actor model is not the panacea it's often made out to be. (Though it's obviously better than shared-memory models for almost everything.). I'm sure you alre

The actor model is not the panacea it's often made out to be. (Though it's obviously better than shared-memory models for almost everything.). I'm sure you already know this, I'm just pointing it out explicitly. For one, AFAICT very few implementations provide built-in back-pressure which is crucial if you want to avoid runaway resource consumption or having to just drop messages on the floor. This may not be critical for one's particular scenario, but it very often is for applications where you'd used threading and blocking queues (redezvous being a special case).