Horizontal scaling

[inz]

Create a MiniZinc model for horizontal scaling and an according recommendation job.

(UI will need slight adjustment as well)

[inz]

Do we want to generate both, vertical and horizontal scaling recommendations?

[gmazlami]

I think we should make it optional, i.e. the user can choose whether to use horizontal or vertical scaling.

[inz]

Right. The only "problem" I have with the current vertical scaling recommendations is that we essentially recommend deployment topologies that consist entirely of SPOFs 😉

We could also let users limit the number of recommended instances per ingredient (as a constraint specified with the workload model. or based on the ingredient type, i.e., RDBMS <5 instances, etc.).

[inz]

Also, with horizontal scaling, the graph got a bit more "boring" 😉

[inz]

I'd like to discuss this further and leave the issue open at least until I open the pull request