Introduction

SPARQLite is an implementation of the SPARQL Protocol for RDF. It has the following design goals:

scalability - there should be no bottlenecks or other impediments that prevent use of the service for many concurrent requests with arbitrary SPARQL queries over billion-triple datasets
quality-of-service - it should be possible to manage load and resource usage, so that predictable levels of performance can be maintained over long periods of time
reliability - it should not be vulnerable to denial-of-service-type problems or anything else that might compromise quality of service
dynamic configuration - it should be possible to create, configure and destroy endpoints dynamically, without needing to restart the context or the container

SPARQLite is a Java web application, intended for deployment within a servlet container such as Tomcat.

It currently uses Jena TDB as the underlying RDF storage and query system. Previous versions also supported Jena SDB, however this was dropped purely because the focus shifted to TDB - support for SDB may be reintroduced in the future.

SPARQLite 0.4

The SPARQLite 0.4 is the most stable development branch. Features include support for for TDB named graph datasets, support for the ARQ query language, and support for LARQ (Lucene + ARQ) integration.

Download

The latest release of SPARQLite 0.4 can be downloaded from the link below.

sparqlite-20090226-0.4-alpha4.war

Installation and Configuration

See notes on installing and configuring SPARQLite 0.4.

Limitations

only JSON format is available for SELECT and ASK queries