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The folks at preemptive (dotfuscator) also provide similar services, mostly around usage analysis. They're .Net specific though. I've never used their product so I can't say whether they're good or not. Here's a link to their product: http://www.preemptive.com/products/runtime-intelligence/overview
I would honestly give MongoHQ a try (https://mongohq.com). I've found MongoDB is really great for massive data sets and MapReduce jobs.
I tried Loggly, but found the user interface to be very confusing and it basically seemed to not work some of the time.