Request Metrics is website performance monitoring, simplified for small teams.
It's not a expensive APM "solution" or a complex query language to learn. Request Metrics is simply the key metrics you need to know to keep your website running fast and your customers happy.
Request Metrics was developed by TrackJS partners Todd Gardner, Eric Brandes, and Jordan Griffin. It was developed "in the open", with coding sessions and planning meetings recorded and broadcast on YouTube. They can be found at https://requestmetrics.com/building/
The service is .NET Core, running on Linux. Our data ingestion is fronted with NGINX. Our data storage is all in Redis.