A simple type useful for representing timestamps as generated by system
events, along with conveniences for converting between time types from common
Haskell time libraries.
Our original use was wanting to conveniently measure things happening on
distributed computer systems. Since machine clock cycles are in units of
nanoseconds, this has the nice property that, assuming the system clock is not
corrupted, two subsequent events from the same source process are likely to
have monotonically increasing timestamps. And even if the system clock has
skew, they're still decently likely to be unique per device. These TimeStamps
thus make good keys when building Maps.
The core type is in Chrono.TimeStamp, see there for full documentation.