Well if it is all about indexes, you'll forgive me for getting confused by the term 'data set', that needs to be in memory http://www.colinhowe.co.uk/2011/02/2

Well if it is all about indexes, you'll forgive me for getting confused by the term 'data set', that needs to be in memory http://www.colinhowe.co.uk/2011/02/23/mongodb-performance-for-data-bigger-than-memor/ http://www.colinhowe.co.uk/2011/02/23/mongodb-performance-fo... Mind you, I've also been to a Mongo seminar, where some real world website managers talked about their data needing to be in memory. To hear it's only the index is a relief, but that hasn't been clear to me :\ So I assume creating an index is all that is needed for MonogoDB to prioritise it into memory?