The engineering blog of AppNexus, an ad-tech company, covering memory allocation, RabbitMQ at scale, API standards, and devops.
HN commenters mention it in passing, comparing its Graphite metrics setup with a MongoDB approach and sharing its Bezier curve demo.
We're currently using Graphite ( http://techblog.appnexus.com/2011/metrics/ ) and loving it, but using MongoDB is an interesting spin.
I'd love to see some performance benchmarks and see how many datapoints you can pump in and out of Cube. We've been collecting about 1 million metrics every minute on a speedy dual proc / quad core box backed with SSDs for storage.
Here's mine from awhile ago:
http://techblog.appnexus.com/2011/an-animated-bezier-curve-demo/