> When using the default stream settings, the latency from reading the data in the source to streaming it into the destination is between 10 and 120 seconds.
> Kerf2 is designed for full concurrency. It also adds transparent type promotion, a C++ instead of C basis, and more.
Which goes unlicensed right now and was created just a bit before the license change in Kerf1. I wonder if Kerf1 will get any more attention or the focus is now at Kerf2.
Google open sourced vitess for scaling out and coordinating (sharding + replication, schema rollouts) mysql databases, it seems they use it internally: http://code.google.com/p/vitess/
This is about using and abusing the _on-demand_ part.
The first example in the Getting started goes with sleepAfter = '10s'.