JanusGraph is a highly scalable graph database optimized for storing and querying large graphs with billions of vertices and edges distributed across a multi-machine cluster. JanusGraph is a transactional database that can support thousands of concurrent users, complex traversals, and analytic graph queries.
<ul>
  <li>Elastic and linear scalability for a growing data and user base.</li>
  <li>Data distribution and replication for performance and fault tolerance.</li>
  <li>Multi-datacenter high availability and hot backups.</li>
</ul>

JanusGraph is a highly scalable graph database optimized for storing and querying large graphs with billions of vertices and edges distributed across a multi-machine cluster. JanusGraph is a transactional database that can support thousands of concurrent users, complex traversals, and analytic graph queries.

JanusGraph - Distributed graph database

Gaffer is a graph database framework. It allows the storage of very large graphs containing rich properties on the nodes and edges. Several storage options are available, including Accumulo, Hbase and Parquet. It is designed to be as flexible, scalable and extensible as possible, allowing for rapid prototyping and transition to production systems.

Gaffer - A large-scale entity and relation database supporting aggregation of properties

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JanusGraph - Distributed graph database

Gaffer - A large-scale entity and relation database supporting aggregation of properties

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JanusGraph - Distributed graph database

Gaffer - A large-scale entity and relation database supporting aggregation of properties

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