What to watch
The origin only ever sees what the cache misses. It handles 120 a second, and the cache is currently hiding 90 percent of the traffic from it. Drag the hit rate down and the origin gets a load nobody ever sized it for.What it is made of
Under load
Measured by running this design through the simulator at multiples of its own offered rate of 400 requests a second. Twenty seconds of simulated time, one fixed seed, so the same numbers come out every time.This design holds 1200 requests a second with 0% errors. At 1600 it is losing 2% of them.
Open this example
Load CDN and origin from the Examples menu and drag the traffic slider yourself.