From the post:
Blazegraph™ has been selected by the Wikimedia Foundation to be the graph database platform for the Wikidata Query Service. Read the Wikidata announcement here. Blazegraph™ was chosen over Titan, Neo4j, Graph-X, and others by Wikimedia in their evaluation. There’s a spreadsheet link in the selection message, which has quite an interesting comparison of graph database platforms.
Wikidata acts as central storage for the structured data of its Wikimedia sister projects including Wikipedia, Wikivoyage, Wikisource, and others. The Wikidata Query Service is a new capability being developed to allow users to be able to query and curate the knowledge base contained in Wikidata.
We’re super-psyched to be working with Wikidata and think it will be a great thing for Wikidata and Blazegraph™.
From the Blazegraph™ SourceForge page:
Blazegraph™is SYSTAP’s flagship graph database. It is specifically designed to support big graphs offering both Semantic Web (RDF/SPARQL) and Graph Database (tinkerpop, blueprints, vertex-centric) APIs. It is built on the same open source GPLv2 platform and maintains 100% binary and API compatibility with Bigdata®. It features robust, scalable, fault-tolerant, enterprise-class storage and query and high-availability with online backup, failover and self-healing. It is in production use with enterprises such as Autodesk, EMC, Yahoo7!, and many others. Blazegraph™ provides both embedded and standalone modes of operation.
Blazegraph has a High Availability and Scale Out architecture. It provides robust support for Semantic Web (RDF/SPARQ)L and Property Graph (Tinkerpop) APIs. Highly scalable Blazegraph graph can handle 50 Billion edges.
The Blazegraph wiki, which has forty-three (43) substantive links to further details on Blazegraph.
For an even deeper look, consider these white papers:
- Bigdata White Paper
- Geospatial Deck
- HA Replication Cluster
- Literature Review of Graph Databases
- RDF* (Foundations of an Alternative Approach to Reification in RDF)
- Reconciliation of RDF* and Property Graphs
- Reification Done Right
- Runtime Query Optimizer (Presentation)