Re: [BuildStream] cache key changes

[Jürg Billeter <j bitron ch>]

On Wed, 2019-07-10 at 15:20 +0100, Sander Striker wrote:
> Just to throw another [implementation detail] suggestion in, which Chandan
> mentioned during a hallway conversation last week: how about we define the
> cache key's as a proto?  That way we have the serialization be very clear,
> and the components of it can be documented with the spec.

This would make sense to me given that we already use protobuf for
artifacts, sources, and CAS/REAPI.

I'd suggest writing a proof of concept and benchmarking that (or
standalone benchmark comparing different serialization approaches).

Cheers,
Jürg