Queries are expressed in LINQ or with a custom query language named RQL (stands for Raven Query Language) with syntax similar to SQL. The transaction will only be persisted if it is confirmed by a consensus of nodes if it is not, the transaction is cancelled and rolled back. Cluster-wide ACID Transactions - ACID transactions can be executed at the scope of a cluster (in addition to single node transactions).Ĭlients are supported for C#, C++, Java, NodeJS, Python, Ruby, and Go. Version 3.0 replaced it with a new open-source storage engine called Voron. RavenDB originally used the ESENT storage engine. Versions 1.0 through 3.5 supported sharding, but versions 4.x do not. Tasks are distributed to the different nodes in a balanced way. Some operations at the cluster level require a consensus of a majority of nodes consensus is determined using an implementation of the Raft algorithm called Rachis. ĭatabases can be deployed on a distributed cluster of servers (called ‘nodes’) using multi-master replication. Documents are grouped into collections, with each document having exactly one collection. Indexing attachments Hub/Sink replication with filtering Ĭoncurrent Data Subscriptions Microsoft Power BI support ĭata is stored as schemaless documents in JSON format. Time series Data compression using the Zstd algorithm Version history Versionīecame cross-platform available with a free license In 2019, Hibernating Rhinos began offering RavenDB as a cloud service named RavenDB Cloud. It was an early document database to offer ACID guarantees. The company claims it was the first document database to run natively in the. Originally named " Rhino DivanDB", RavenDB began in 2008 as a project by Oren Eini (aka Ayende Rahien) and is developed by Hibernating Rhinos Ltd. RavenDB stores data as JSON documents and can be deployed in distributed clusters with master-master replication. It is cross-platform, supported on Windows, Linux, and Mac OS. RavenDB is an open-source fully ACID document-oriented database written in C#, developed by Hibernating Rhinos Ltd. Windows, Linux, Mac OS, Docker and Raspberry Pi
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