Best Key-Value Databases for C++

Dragonfly is an advanced key-value database designed for high throughput, fully compatible with both Redis and Valkey APIs. It accommodates a variety of data types including strings, hashes, lists, sets, sorted sets, streams, and JSON, allowing applications that utilize Redis clients to operate seamlessly on Dragonfly without any code modifications. With its multi-threaded, shared-nothing architecture, Dragonfly efficiently processes requests across all CPU cores simultaneously, achieving up to 6 million operations per second per node while maintaining consistently low latency even under heavy load. The innovative Dashtable data structure significantly minimizes memory usage by as much as 40%, enabling teams to manage a larger number of keys with less hardware. Additionally, its snapshotting feature avoids the memory surges associated with fork-based persistence, ensuring that large datasets remain stable during backup processes. Dragonfly can manage extensive datasets on a single node before clustering becomes necessary, which streamlines operational management. It can be deployed either as a self-hosted solution or as a fully managed service via Dragonfly Cloud.