Depends on your use case. Redis is a key-value store that is optimized for simpler workloads and is designed as a caching layer.

Umbra, on the other hand, is a full fledged, ACID compliant relational database systems with all bells and whistles.

However, Umbra can process multiple 100ks of transactions per second. If you're interested in more details, take a look at Figure 6 in this research paper: https://db.in.tum.de/~freitag/papers/p2797-freitag.pdf

Disclosure: I work for CedarDB (https://cedardb.com), the commercial spinoff of Umbra.