Product appears to have nothing to do with Redis and isn't even remotely compatible. Marketer uses buzzword to attempt to get credibility and hence immediately loses all credibility with actual market.
Spacebase appears to be a significantly more primitive KV store that implements RTree. Not that that's bad; looks interesting, even though it appears that the product won't be free, and so in my opinion is probably doomed.
Using 'Redis' in the title is just embarrassing for Spacebase and, by extension, for YC too. No need to troll the professional developer community with ridiculous comparisons.