CumulusRDF (see Wikipedia[1] for details on "Cumulus") is an RDF store on a cloud-based architecture. CumulusRDF provides a REST-based API with CRUD operations to manage RDF data. The current version uses Apache Cassandra as storage backend.

To use CumulusRDF for your project, see the GettingStarted wiki page!

• By means of Apache Cassandra [2] CumulusRDF offers a highly scalable RDF store for write-intensive applications
• CumulusRDF acts as a Linked Data server
• It allows for fast and lightweight evaluation of triple pattern queries
• It has full support for triple and quad storage
• CumulusRDF comprises a SesameSail [3] implementation, see CodeExamples wiki page.
• Further, CumulusRDF contains a SPARQL1.1 endpoint.

Please see our Features as well as our Roadmap wiki page for further information.

We welcome any kind of contribution to cumulusRDF. In particular, we have a developer mailing list. Feel free to sign up via the web interface or by emailing at cumulusrdf-dev-list+subscribe@googlegroups.com.

You can sign up to the CumulusRDF mailing list via the web interface or by emailing at cumulusrdf-list+subscribe@googlegroups.com.

CumulusRDF is developed by the Institute of Applied Informatics and Formal Desciption Methods (AIFB) as well as by developers from our community. The developers are (in random order)

• Andreas Wagner
• Andreas Harth
• Sebastian Schmidt
• Andrea Gazzarini
• Federico Zancan
• Yongtao Ma
• Mirko Kämpf

• Günter Ladwig
• Steffen Stadtmüller
• Felix Obenauer

@Inproceedings{ladwig2011cldmonks,
author = {Guenter Ladwig and Andreas Harth}
title = {CumulusRDF: Linked Data Management on Nested Key-Value Stores},
booktitle = {Proceedings of the 7th International Workshop on 
Scalable Semantic Web Knowledge Base Systems (SSWS2011)
at the 10th International Semantic Web Conference (ISWC2011)},
month = {October},
year = {2011}
}

@incollection{
year={2013},
isbn={978-3-642-41337-7},
booktitle={The Semantic Web – ISWC 2013},
volume={8219},
series={Lecture Notes in Computer Science},
editor={Alani, Harith and Kagal, Lalana and Fokoue, Achille and Groth, Paul and Biemann, Chris and Parreira, JosianeXavier and Aroyo, Lora and Noy, Natasha and Welty, Chris and Janowicz, Krzysztof},
doi={10.1007/978-3-642-41338-4_20},
title={NoSQL Databases for RDF: An Empirical Evaluation},
url={http://dx.doi.org/10.1007/978-3-642-41338-4_20},
publisher={Springer Berlin Heidelberg},
author={Cudré-Mauroux, Philippe and Enchev, Iliya and Fundatureanu, Sever and Groth, Paul and Haque, Albert and Harth, Andreas and Keppmann, FelixLeif and Miranker, Daniel and Sequeda, JuanF. and Wylot, Marcin},
pages={310-325}
}

CumulusRDF was supported by the German Federal Ministry of Economics and Technology in the iZEUS project.
The CumulusRDF logo was kindly provided by Daniele Liberti.

[1] http://en.wikipedia.org/wiki/Cumulus
[2] http://cassandra.apache.org
[3] http://openrdf.org