> db.messages.find({ "tags" : "говно" }).sort({ "date" : -1 }).explain()
{
	"cursor" : "BtreeCursor date_-1_recommendations_-1",
	"isMultiKey" : true,
	"n" : 2500,
	"nscannedObjects" : 33382,
	"nscanned" : 33382,
	"nscannedObjectsAllPlans" : 35402,
	"nscannedAllPlans" : 35402,
	"scanAndOrder" : false,
	"indexOnly" : false,
	"nYields" : 0,
	"nChunkSkips" : 0,
	"millis" : 52,
	...
}
> db.messages.find({ "tags" : "говно" }).sort({ "date" : -1 }).hint("user_1_tags_1_date_-1").explain()
{
	"cursor" : "BtreeCursor user_1_tags_1_date_-1",
	"isMultiKey" : true,
	"n" : 2500,
	"nscannedObjects" : 2500,
	"nscanned" : 2948,
	"nscannedObjectsAllPlans" : 2500,
	"nscannedAllPlans" : 2948,
	"scanAndOrder" : true,
	"indexOnly" : false,
	"nYields" : 0,
	"nChunkSkips" : 0,
	"millis" : 20,
	...
}