<p>If your application's infrastructure is based in the cloud, then monitoring that infrastructure requires a cloud-based product as well. But monitoring the performance of cloud-based apps and the clouds they are hosted on requires a lot of data. Terabytes of it.</p><p>Boundary, the real-time network monitoring service, has expanded its product portfolio to include alerts for clients when their online services behave abnormally. Boundary has already touted its ability to see cloud outages a few hours before they happen based on the network data it sees from customers hosted on Amazon's or Microsoft's Azure clouds, but this new service targets individual customers.</p><p>The idea is that Boundary has analyzed the performance and habits of a customer's network so when that pattern changes, Boundary can send an alert. The company is ingesting 350 Mbps of inbound networking traffic on its 550 customers which it then processes in real time. Boundary has its own custom-built, real-time data processing engine, that takes this influx of second-by-second data and combines it into dozens or hundreds of terabits per second of traffic for analysis. A Boundary spokesman notes that this current rate represents a fraction of the startup's total processing capacity.</p><p>Indeed, both the product launch and the data flows are topics I've discussed with Boundary CEO Gary Read (pictured) in the past. We've outlined the merits of real-time network monitoring that can track multiple data points every second as well as discussed what that will mean in terms of the amounts of data that Boundary will have to process. With 550 customers, Boundary is analyzing 600,000 events every second and the company is adding about 10 to 12 paid customers each month.</p><p><a href="http://gigaom.com/cloud/boundary-hopes-to-show-you-the-web-and-your-app-in-real-time/">Keep reading...</a></p>