Meteor is the fastest way to build modern apps, and thanks to tools built by the Meteor community, it’s also incredibly easy to test and debug them in production. Meteor’s Kadira — a performance monitoring solution already used by over 1000s of Meteor developers – and just like Meteor – is free. If you are running a Meteor application in production, you can Kadira here.
Kadira shows you what’s happening in your Meteor app in real time. It’s built by Arunoda Susiripala of Meteorhacks. Kadira provides a dashboard with key, live-updating metrics such as PubSub response times and memory usage, and its trace explorer allows you to easily debug errors in context or inspect slow methods. Arunoda has written an introduction to Meteor performance optimization for the Discover Meteor blog and has more resources for you at the Kadira Academy.