Are there any best practices or built-in support for keeping track of what's been indexed in a Solr application so as to support a full rebuild? I'm not indexing from a single source, but from many, sometimes arbitrary, sources including:
1. A document repository that fires events (containing a URL) when new documents are added to the repo; 2. A book-marking service that fires events containing URLs when users of that service bookmark a URL; 3. More services that raise events that make Solr update docs indexed via (1) or (2) with additional metadata (think user comments, tagging, etc). I'm looking at ~200M documents for the initial launch, with around 30K new docs every day, and many thousands of metadata events every day. Do any of you Solr gurus have any suggestions or guidance you can share with me? Thanks in advance, Rich
