 <p>I ended up creating this little baby:</p> <p><a href="https://gist.github.com/carstengehling/6495127" rel="nofollow">https://gist.github.com/carstengehling/6495127</a></p> <p>Works quite nice for the purpose. A bit like rollout, though not user-specific and using AR instead of Redis.</p> <p>Anyone else who finds this approach interesting, please let me know - I could do a gem.</p>