It seems like it is really hard to decide when the Multiple Core solution is more appropriate.As I could understand from this list and wiki the Multiple Core feature was designed to address the need of handling different sets of data within the same solr instance, where the sets of data don't need to be joined. In my case the documents are of a specific site and country. So document A can be of Site 1 / Country 1, B of Site 2 / Country 1, C of Site 1 / Country 2, and so on. For the use cases of my application I will never query across countries or sites. I will always have to provide to the query the country id and the site id. Would you suggest to split my data into cores? I have few sites (around 20) and more countries (around 90). Should I split my data into sites (around 20 cores) and within a core filter by site? Should I split by Site and Country (around 1800 cores)? What should I consider when splitting my data into multiple cores?
Thanks Jonathan
