Amazon RDS vs RocksDB

Amazon Relational Database Service (RDS) is a managed database service from AWS that supports MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Db2 engines. It automates hardware provisioning, database setup, patching, and backups with options for Multi-AZ deployments and read replicas.

RocksDB is Embeddable persistent key-value store from Meta optimized for fast storage, forked from LevelDB.. It is available under a free model. This tool falls under the databases category.