Ipothesis: i want split universe set to index in different subtopics/entities/subsets Considering for semplicity entity X is indexed in Index_X folder.
Considering now i have a query when is searched X1,X2,X3 , for semplicity N is the number of sub readers. I could use MultiReader lucene api for making it. questions: 1) what about MultiReader performance /memory in relation to a monolitic index? memory used is N times what used by a monolitic index? 2) avantages /disadvantages MultiReader against SingleReader?