The interest in exploiting the content to be found in institutional repositories is growing. At the same time, there is a range of possible uses for a central cache of metadata records held by institutional repositories.
RepUK harvests the metadata UK OpenDOAR registered repositories via OAI-PMH and presents the results in the form of visualisations. At the time of writing 152 repositories are havested. The 1.3 Million records and 26 Million elements are processed on a national and individual basis. In addition the metadata is presented as a faceted search based on Solr indexes.
RepUK is a Java application running in Apache Tomcat, on a Spring 2.5, Spring Batch, Ibatis, MySQL and Solr stack.