OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text, Geospatial and Key-Value models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries. OrientDB Community Edition is Open Source using a liberal Apache 2 license.
A simple REST API built with Spring Boot and OrientDB (Object API) datastore, secured with Apache Shiro (distributed session storage powered by Hazelcast).
Reactive Streams Specification for the JVM
Experimental CQRS and Event Sourcing service
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