Side note, but I really dislike the current trend (in in-memory databases, to be clear) of not bothering to include any real provisions for durability and justifying it by saying "NVRAM exists." It effectively doesn't for anyone who need to be able to deploy to off-the-shelf environments, and it's super expensive (and if you're going for performance, like most of the research projects are, countering by using the database in a clustered configuration would be counterproductive). Are there any cloud providers who provide NVRAM in any configuration?