Synonyms in Solr (query time vs index time)

Question

What are the advantages of using synonyms at index time vs expanding at query time? In what case would you use both?

Answer 1

There's a very good write-up at http://nolanlawson.com/2012/10/31/better-synonym-handling-in-solr/ … I remembered that one, because I had the same question recently, and I found that via Google *wink wink*.

Basically, there's a huge difference between both, and you may need to use both in the end, depending on what you're trying to achieve.