development triplestore only; not optimized at all
Potential Improvements (if you have cycles for development)
Better Support for Desirable Triplestores
"The requirements for an `RDF::Repository` are fairly small, and ought to be manageable for anyone already familiar with a given triplestore's interfaces. I'd particularly like to see a 4Store implementation that uses bindings to the C interface; and I've recently worked on an alternative Blazegraph implementation using the Java (OpenRDF/Sesame) APIs. Unfortunately, this would only run in JRuby."
Evaluation, benchmarking, and optimization of existing implementations
"Evaluation, benchmarking, and optimization of existing implementations would be another useful line of work from the RDF.rb perspective."