Redis as a smart cache complement to Fedora Commons
One of a more specialized NoSQL data storage technology used in the digital library and archival fields is an open source project called Fedora Commons, a Java-based linked data platform, for storing and preserving digital objects. This platform stores the metadata describing an object as an RDF graph; however, to fully leverage the capabilities of the Fedora Commons, commonly shortened to just Fedora (although this does introduce some confusion especially between the Fedora, the digital repository, and Fedora the Linux distribution), you need an attached SPARQL triple-store with the most popular being Apache's Fuseki and Blazegraph. Most libraries and other cultural heritage institutions that use Fedora as their digital repository also use a web presentation frontend with the two most popular choices being a Drupal-based open source project called Islandora (http://islandora.ca) and a Ruby-on-Rails open source project called Hydra (http...