I wrapped up my last post [https://blog.troutwine.us/2017/12/09/reliably-transmitting/] by saying > I think, next steps, I'll try and get multiple senders going at once. That should be fun. and that's what I've done! It turns out, it also was pretty fun. You can see the

In the previous Hopper Rework post [https://blog.troutwine.us/2017/12/03/mmap-prototyping/] I introduced my ambition to get disk-backed MPSC Sender / Receiver going on top of * fine-grained, atomic synchronization * mmap'ing queue files instead of the giant-struct-in-a-mutex nightmare we have now. Well! I did some fiddling on the mmap_

A while back I spoke about cernan [https://github.com/postmates/cernan/] to the Rust Meetup in San Francisco [https://air.mozilla.org/bay-area-rust-meetup-november-2017/]. I kindly mentioned in my spiel that hopper [https://github.com/postmates/hopper/] – the disk-backed MPSC that allows cernan to cope with overload and keep a