Reliability backend needs persistence just like the causality backend.

[cmeiklejohn]

[aramallo]

I think the best approach would be to develop a behaviour and a default backend using dets or dlog. We can then define a rocksdb backend but as a separate project to avoid having rocksdb as direct dependency.

[aramallo]

BTW, I think Helium Recast project is following the same approach and using RocksDB