Do you expect to receive such traffic? Congratulations.
I donβt know a single website with so much traffic using Mono, but here are a few considerations:
The most similar loading scenario can be seen using the Plastic source code management tool, since in this model you have a central server that processes the load from distributed clients. I do not believe that they ran into reliability issues with Mono. You could ask them about Mono under load, though.
Mono's ASP.NET MVC implementation uses the actual Microsoft code since MVC was released as Open Source. The implementation of ASP.NET in Mono was solid and fairly mature.
Most websites are limited by IO, which means Mono is unlikely to be a limiting factor. Mono is slower than .NET, but for most things, it is in the same field. GC, of ββcourse, is less effective though.
You can download the Mono test yourself. In my experience, it works great.
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