Ditch `memory_store` for local caching
Ditch `memory_store` for local caching

It's got some implementation differences from `mem_cache_store` that would require some code refactoring (into a
slightly uglier way of generating cache keys). Since it's only for local, we'll just drop caching when running locally,
nbd.

glacials/splits-io,BatedUrGonnaDie/splits-io,BatedUrGonnaDie/splits-io,BatedUrGonnaDie/splits-io,glacials/splits-io,glacials/splits-io,BatedUrGonnaDie/splits-io,glacials/splits-io