HSQLDB vs Speedb

Original code, based on in-depth study of database theory and the SQL Standard; Extensive syntax compatibility modes for porting from other database systems; The fastest overall open-source SQL implementation for small and medium sized databases; Three transaction control models, including lock based and MVCC models; Fully multi-threaded; Compact code footprint

RocksDB Compliant - Speedb is a drop-in replacement solution for RocksDB; Supports petabyte-scale datasets with no shards; Handles billions of objects while maintaining high performance; Improves write amplification and eliminates I/O hangs on writes while optimizing resource footprint; Reduces management overhead by allowing applications to run on a single database – even with billions of objects – while maintaining high performance; Minimizes CPU and memory usage to handle more data and achieve scalability while reducing storage and networking costs; Frees developers from having to constantly deal with database tuning and other time-consuming operational tasks, so they can focus on delivering real business value; Supports services and bespoke customization to meet use-case specific requirements and achieve faster time-to-market