I am planning to index 275+ different sites with Solr, each of which
might have anywhere up to 200 000 documents. When performing searches,
I need to be able to search against any combination of sites.
Does anybody have suggestions what the best practice for a scenario
like that would be, considering both indexing and querying
performance? Put everything into one index and filter when performing
the queries, or creating a separate index for each one and combining
results when performing the query?
