http/pprof
benchmarking on ben.csail.mit.edu
FIX CORRECTNESS: sort commits by sender before hashing for ack
Decrease database load.

- use prepared statements
- keep primary key around to query by it
- keep some of the state in memory instead
use hmac instead of signatures for registration tokens
blocking on db read and merklemap resolve in HandleTransfer
performance evaluation...
dename.go no more shitty profiling
benchmarker realtime progress reporting