vCorfu: A cloud-scale object store on a shared log https://blog.acolyer.org/2017/05/03/vcorfu-a-cloud-scale-object-store-on-a-shared-log/
Not only does vCorfu outperform Cassandra, it also provides strong consistency, efficient transactions, and global snapshots at cloud scale.
If this sounds too good to be true, read the paper here. Learn more about the researchers working on Corfu projects here .