search - really the holy grail. Combine full text search (with tf-idf or bm-25 support. Not the kind that postgres/mysql does). This is a tricky engineering pr

search - really the holy grail. Combine full text search (with tf-idf or bm-25 support. Not the kind that postgres/mysql does). This is a tricky engineering problem - have two kinds of indexes in the same database. But disk space is cheap. Network is expensive (especially if you're on AWS).