Hi,

I posted a question on stackoverflow regarding this 
http://stackoverflow.com/questions/26909948/how-to-determine-amount-of-memory-used-by-different-solr-caches
<http://stackoverflow.com/questions/26909948/how-to-determine-amount-of-memory-used-by-different-solr-caches>
  

Haven't received a response, so I am hoping to get the answer here. This is
the question

Solr wiki  https://wiki.apache.org/solr/SolrCaching
<http://wiki.apache.org/solr/SolrCaching>   states

filterCache stores unordered sets of document IDs that match the key

queryResultCache stores ordered sets of document IDs

What is the document id being referred to here? What is its size? Is it a
boolean bit vector with 1/0 for all documents present in the collection,
such that its size is equivalent to total docs * 1 bit? Mostly I am
concerned with changes in size of cache wrt number of indexed documents.

Also is there any way to get the exact size of each cache in bytes?



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