Although SharePoint 2013 doesn't allow publishing content directly into it's index. It its index, it does provide a way to create connectors that it can use to crawl non-native content called based on the SharePoint Business Data Connectivity (BDC) model.
In previous versions, we offered a Windows Communication Foundation (WCF)-based BDC connector to index content into SharePoint searchSearch. This This component used a File System file system-based intermediate repository, which brought wrought a series of inconveniences regarding performance, security and scalability.
With the creation of STageR StageR (the a mongodb and node.js-based staging repository), it was 's now possible to create a more compact solution that would leverage all the capabilities of STageR when indexing content into SharePoint Search that also leverages all of the capabilities of StageR .
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