hashicorp/raft — pull request #15 by armon (2014-06-06 01:06:47+00:00)
Title: Adding support for pipelining of AppendEntries

By pipelining the append entries RPCs we move our bottleneck from network latency to disk and network throughput. In most environments, this should cause a dramatically increased write throughput. We take a very conservative approach by enabling pipelining only in the "happy path", and fall back to our request/response mechanism for the more complex replication situations.