ValuStor

ValuStor is a key-value pair database client library that wraps the Cassandra driver with a simple C++ API, using ScyllaDB as its backend. It was created to address limitations in solutions like memcached by providing persistent storage, built-in redundancy, TLS support, and flexible data typing while maintaining high performance.

Key Features

• Simple API — Only store() and retrieve() functions are needed, with no manual query writing.
• Header-Only C++ Library — Single-file, C++11-compatible implementation for easy integration.
• Persistent & Scalable Backend — Leverages ScyllaDB/Cassandra for disk-backed storage with high performance and automatic scaling.
• Tunable Consistency — Adaptive fault tolerance with configurable consistency levels for reads and writes.
• Optional Write Backlog — Queues data locally if the database is unavailable, preventing data loss.
• Rich Type Support — Stores integers, floats, strings, blobs, UUIDs, and JSON documents natively.
• TLS Encryption — Supports secure connections with optional client authentication.

Philosophy

ValuStor prioritizes simplicity and reliability, offering a straightforward API that abstracts database complexities while ensuring high availability and data persistence through its ScyllaDB backend and adaptive consistency model.