GraphStore

GraphStore is an in-memory graph structure implementation written in Java. It's designed to be powerful, efficient and robust. It's powering the Gephi software and supports large graphs in intensive applications.

Features Highlight

• Blazing fast graph data structure optimized for reading and writing
• Comprehensive APIs to read and modify the graph structure
• Low memory footprint - reduced usage of Java objects and collections optimized for caching
• Supports directed, undirected and mixed graphs
• Supports parallel edges (i.e. edges can have a label)
• Any number of attributes can be associated with nodes or edges
• Thread-safe - Implements read-write locking mechanism to allow multiple reading threads
• Supports dynamic graphs (graphs over time)
• Built-in index on attribute values
• Fast and compact binary serialization
• Spatial indexing based on a quadtree

Download

Stable releases can be found on Maven central.

Development builds can be found on Maven's snapshot repository.

Documentation

API Documentation is available here.

Follow this QuickStart to get started.

Usage

From a Maven project

<dependency>
    <groupId>org.gephi</groupId>
    <artifactId>graphstore</artifactId>
    <version>0.8.8</version>
</dependency>

From a Gradle project

compile 'org.gephi:graphstore:0.8.8'

Dependencies

GraphStore is built for JRE 17+ and depends on FastUtil.

For a complete list of dependencies, consult the pom.xml file.

Developers

How to build

GraphStore uses Maven for building.

> mvn clean install

Note that code formatting is automatically applied at that time.

How to test

> mvn test

How to obtain code coverage report

> mvn jacoco:report

Contribute

The source code is available under the Apache 2.0 license. Contributions are welcome.