> This should be tested periodically to ensure that your backends are able to scale & take the load without shedding due to the lack of CDN.

Are you thinking of a cloud-computing context here? Seems to me a lot hinges on this, but perhaps I'm misunderstanding you.

If so, this would answer the scale question, and would presumably translate into increased prices until the incident is over. (I'm assuming CloudFlare offer a cheaper solution than doing it yourself on a cloud.)

If not, and you own the physical capacity yourself, wouldn't you do away with CloudFlare entirely?