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== Introduction

https://docs.grails.org/lastest/grails-data/[GORM], the object mapping technology built into the Grails framework, has traditionally been a primarily blocking API.

Async features were added in GORM 4, however these are merely a way to isolate your blocking operations onto a different thread and not a truly non-blocking implementation.

RxGORM builds on top of https://reactivex.io[RxJava] and provides a completely non-blocking, stateless implementation of GORM.

Currently, only MongoDB is supported as a backing store. However, implementations are planned for SQL, REST client and other NoSQL datastores in the future (subject to driver support).

