Gave this 5 minute lightning talk at a Javascript meetup group. It included an example application.
The web application (one service) was a small app built in Python/Flask. The search (a 2nd service) was powered by a Node HTTP server, used as an API to run the site search. Metrics (the third service) were captured using Node's Statsd (open-sourced by Etsy), which can be used safely in Python without fear of causing site crashes due to using UDP (a fire and forget protocol).