Titan

Titan can work with huge graph systems over a machine cluster.

Titan works faster than most other similar technologies because it separates the code handling the graph processing from the code that handles the actual storage operations (disk writes).

Features:

• Supported database storage layers:
• Apache Cassandra
• HBase

What is new in this release:

• Added 0.4.2 to compatible-version string.

What is new in version 0.4.2:

• Finer-grained Thrift connection pooling that gracefully handles failure to close result iterators
• Optionally silently ignore unrecognized fields on index queries instead of throwing an exception
• Configurable Astyanax RetryBackoffStrategy
• Allow comparison of heterogeneous numeric types

What is new in version 0.4.1:

• Fixed multiQuery() for specific has() conditions. Added support for multiQuery(Collection).
• Fixed limit adjustment issue for unconstraint IN/OUT queries
• Fixed packaging issues
• Fixed cache misses due to wrong limit interpretation
• Better caching implementation for relations (RelationCache) to provide better de-serialization performance
• Addition of a new query optimizer that can significantly speed up a subset of traversals
• Support for reverse ordering in vertex centric queries by defining: makeLabel(..).sortKey(..).sortOrder(Order.DESC).make()
• Support for index configuration parameters passed into KeyMaker.indexed(String,Class,Parameter...) to change the default indexing behavior of an indexing backend.
• Support for TEXT and STRING mapping of strings in both Lucene and ElasticSearch configurable as a parameter
• Refactored Text.REGEX/PREFIX to Text.CONTAINS_REGEX/CONTAINS_PREFIX to accurately reflect their semantics. Added Text.REGEX/PREFIX for full string matching
• Added support for scaling the id allocation to hundreds of parallel Titan instances through additional configuration options
• Support for secure access to storage backend through username/password authentication in Cassandra

What is new in version 0.1 Alpha:

• First release.