Apache Ignite 3 also uses RocksDB as a pluggable storage https://www.gridgain.com/resources/blog/apache-ignite-3-alpha-3-apache-calcite-raft-and-lsm-tree https:

Apache Ignite 3 also uses RocksDB as a pluggable storage https://www.gridgain.com/resources/blog/apache-ignite-3-alpha-3-apache-calcite-raft-and-lsm-tree https://www.gridgain.com/resources/blog/apache-ignite-3-alph...