Dragonfly is an in-memory data store compatible with the Redis, Valkey and Memcached APIs. Its architecture is multi-threaded and shared-nothing: the keyspace is partitioned across threads, which the vendor says uses hardware more efficiently than Redis. Typical uses are caching, feature stores and job queues. You can run Dragonfly yourself from the project on GitHub, or use it as a managed service through Dragonfly Cloud, which is hosted on AWS, Google Cloud and Microsoft Azure and also offers bring-your-own-cloud.
Dragonfly is released under the Business Source License 1.1, which makes it source-available rather than open source in the OSI sense. You may use and modify the code freely, including inside your own products and in production; offering Dragonfly itself as an in-memory data store product or as a competing managed service is not permitted. On 1 November 2030 the licence converts to Apache 2.0. The developer, DragonflyDB, is based in Tel Aviv, Israel, outside the EU. The documentation does not state where Dragonfly Cloud hosts your data; with self-hosting you decide the location yourself.