VoltDB
VoltDB is an in-memory, NewSQL relational database management system designed for high-throughput, low-latency transactional applications. It combines the scalability of NoSQL systems with the ACID compliance and SQL interface of traditional relational databases, making it ideal for real-time analytics and fast data processing. The database is optimized for modern hardware, leveraging in-memory storage and partitioning to handle millions of transactions per second.
Developers should learn and use VoltDB when building applications that require real-time data processing, such as financial trading systems, telecommunications, IoT platforms, or online gaming, where low latency and high transaction rates are critical. It is particularly valuable in scenarios where traditional databases struggle with performance under heavy loads, as it provides SQL compatibility without sacrificing speed, enabling complex queries on fast-moving data streams.