Skip to main content

RDF4J 4.0.0 Milestone 3

Tue, Apr 12, 2022

Milestone number 3 of the upcoming 4.0.0 release of RDF4J is now available for download.

RDF4J 4.0.0 is a major release of the RDF4J framework, focusing on improved performance and improved maintainability. We’ve done a massive clean up of the project structure, which is intended to make it easier to deliver new features in this and future releases.

Some of the highlights covered in this third milestone:

  • improved normalization of BCP47 language tags
  • type/language-based filtering in Lucene full-text search
  • support for concurrent reads on a single connection
  • storing SHACL Shapes in user specified graphs docs
  • various performance improvements in Native/LMDB/Memory stores

For more details see the release notes.

This third milestone build is the final milestone before official release, and is considered feature-complete. We are seeking feedback on any bugs, omissions in documentation or upgrade notes, or any other observations that you’d like to share.


Eclipse RDF4J™ is a powerful Java framework for processing and handling RDF data. This includes creating, parsing, scalable storage, reasoning and querying with RDF and Linked Data. It offers an easy-to-use API that can be connected to all leading RDF database solutions. It allows you to connect with SPARQL endpoints and create applications that leverage the power of linked data and Semantic Web.

RDF4J Architecture

Back to the top