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Titan is a distributed graph database optimized for storing and querying graphs represented over a cluster of machines. The cluster can elastically scale to support a growing dataset and user base. Titan has a pluggable storage architecture which allows it to build on proven database technology such as Apache Cassandra, Apache HBase, or Oracle BerkeleyDB. Furthermore, the pluggable indexing architecture supports ElasticSearch and Lucene. Titan is a native Blueprints enabled graph database and as such, it supports the full TinkerPop stack of technologies.

Please use Aurelius’s mailing list for all Titan related questions. For TinkerPop related discussions, use the Gremlin-Users mailing list. For commercial Titan support, please contact the graph experts at Aurelius and follow them on Twitter @aureliusgraphs.

<dependency>
   <groupId>com.thinkaurelius.titan</groupId>
   <artifactId>titan-core</artifactId>
   <version>0.5.0</version>
</dependency>
<!-- core, all, cassandra, hbase, berkeleyje, es, lucene, hadoop -->

Version Numbers

Titan Version	Status	Comments
0.5.X	Active	Broader feature set than any previous release. 0.5.z is also the first release that intends to maintain disk-format compatibility/upgradeability with future releases.
0.4.X	Maintenance	0.4.z is stable and supported.
0.3.X	Maintenance	0.3.z is currently supported, but for new installations, either 0.4.X or 0.5.X is recommended.
0.2.X and earlier	Unsupported	These are deprecated and unsupported.

Note: Titan uses the Semantic Versioning (semver.org) version numbering convention. There is no stability difference between even and odd numbered versions.

Titan 0.4.X Manual

• Introduction
  • Beginner's Guide
  • The Benefits of Titan
  • Getting Started
  • Introduction to Titan Video (external)
  • Comprehensive Presentation on Titan (external)
• Using Titan
  • Titan Interfaces (JavaDoc)
    • TinkerPop Graph Stack
    • Blueprints Interface (full documentation)
    • Gremlin Query Language (full documentation)
      • GremlinDocs (cheat sheet)
    • Rexster Graph Server (full documentation)
    • Hadoop Connectivity
  • Transactions
    • Transaction Handling
    • Multi-Threaded Transactions
    • Transaction Configuration
  • Titan Gotchas and Limitations
• Managing Titan
  • Storage Backends
    • Storage Backend Overview
    • Using Cassandra
    • Using HBase
    • Using Persistit
    • Using BerkeleyDB
  • Indexing Backends
    • Indexing Backend Overview
    • Using Elastic Search
    • Using Lucene
    • Full Text and String Search
    • Direct Index Query
  • Type Management
    • Type Definition Overview (cheat sheet)
    • Vertex-Centric Indices
  • Configuration and Tuning
    • Graph Configuration (cheat sheet)
    • Datatype and Attribute Serializer Configuration
    • Example Graph Configuration
  • Data Caching
    • Database Cache
    • Transaction Cache
• Advanced Topics
  • Bulk Loading
  • Faster Deep Traversals
  • Advanced Indexing
  • Global Graph Analytics
  • Advanced Blueprints
  • Building Titan
  • Titan Performance and Monitoring
  • Titan Data Model
  • Eventually Consistent Storage Backends
• Titan Tutorials
  • Generating Artificial Natural Graphs
  • Titan Presentations
• Related Third Party Projects
  • Bulbflow (Python client)
  • Titanium (Clojure client)
  • Thunderdome (Python client)
  • Titan Tools (Collection of management tools for Titan)
  • Titan Chef Cookbook (Chef cookbook)
  • KeyLines Graph Visualization (GUI interface)
• Version Compatibility (cheat sheet)
• Release Notes
• Upgrade Instructions
• Acknowledgements

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The documentation in this wiki is respective of the current master branch, not the latest release.

JavaDoc: 0.4.4 — 0.4.3 — 0.4.2 — 0.4.1 — 0.4.0 — 0.3.2 — 0.3.1 — 0.3.0 — 0.2.1 — 0.2.0 — 0.1.0
WikiDoc: 0.4.4 — 0.4.3 — 0.4.2 — 0.4.1 — 0.4.0 — 0.3.2 — 0.3.1 — 0.3.0 — 0.2.1 — 0.2.0 — 0.1.0