Re: Dual cache key calculation and build planning modes

[Tristan Van Berkom <tristan vanberkom codethink co uk>]

On Thu, 2017-07-06 at 07:33 +0100, Paul Sherwood wrote:
> On 2017-07-06 07:15, Paul Sherwood wrote:
> > Hi Tristan,
> > On 2017-07-05 10:05, Tristan Van Berkom wrote:
> > > Premise
> > > ~~~~~~~
> > > The premise is simply that every element has 2 cache keys
> > > generated at
> > > all times.
>
> I should also mention versioning of keys at this point. People who care 
> about the 'strong' key usecases almost certainly care about being able 
> to recreate old artifacts. Whatever key scheme you decide upon, you 
> should expect that it will need to be changed/iproved over time. So 
> please ensure that you have easy versioning included in your cache 
> calculation/checking functions. YBD's scheme is already up to V9

Good call, thanks for pointing this out again, I've been letting it
slip.

I'll try to get this revisioning + test case in by this weekend.

Cheers,
    -Tristan