Pubmed
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The updated version of PubMed takes advantage of several new technologies to improve the user experience. The underlying document data indexed in the updated version is a merger of content from PubMed, Bookshelf and PubMed Central (PMC). This combined dataset allows us to display relevant information not previously available in a PubMed record, such as reference citations from PMC. While legacy PubMed limited the number of variants for a wildcard (‘*’) search, PubMed is now capable of unlimited wildcard searches thanks to Solr (https://lucene.apache.org/solr/), the open-source enterprise search system that PubMed now uses for document indexing. Users will find that PubMed now has greater scalability and reliability, provided not only by Solr, but also by the MongoDB storage solution and the modern cloud architecture that together ensure both redundancy between data centers and also trustworthy backup environments. When visiting PubMed, users will enjoy a modern web experience using the latest web technologies and standards, all provided by the Django web framework.