There’s a (slow) query profiler in MongoLab:
You’ve launched your application, driven some traffic to it (maybe it’s even “gone viral”!), accumulated a meaningful volume of data and now it feels like some of your queries have become sluggish. What now? Time for query profiling! MongoLab can help.
Soon long-time DBAs will be able to get certified in MongoDB administration and query optimizations.
Original title and link: MongoDB Query Profiling on MongoLab ( ©myNoSQL)