This is a visualization of the full web traffic load on Varnish/Apache during peak usage times at iHR. Each ball is a request being served. This is behind Akamai CDN, these are incoming requests to ORIGIN.
Using Logstalgia and glTail.
The stack:
Users - Akamai CDN - F5 - Varnish - Apache - MySQL/memcached
https://www.youtube.com/playlist?list=PLgMsOP8fnLVkeLhfNB7SXzg4qnyp4WC5K