ScyllaDB
ScyllaDB is a distributed NoSQL database that is compatible with Apache Cassandra but offers superior performance and lower latency. It's designed to handle high-throughput, low-latency workloads with linear scalability. ScyllaDB is written in C++ and uses a shared-nothing architecture, making it highly efficient for modern hardware. It's particularly well-suited for applications requiring high availability, consistent performance, and massive scalability.