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!

Features

• 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.

Want to contribute?

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.

Support

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

People Involved

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)

Active Contributors

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

Previous Contributors

• Günter Ladwig
• Steffen Stadtmüller
• Felix Obenauer

Publications

CumulusRDF: Linked Data Management on Nested Key-Value Stores

@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}
}

NoSQL Databases for RDF: An Empirical Evaluation

@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}
}

Acknowledgements

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.

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