Netlify handles the traffic fine. But, we usually ask our users to let us know in advance if they’re going to experience high traffic. This is so that our reliability team doesn’t think of this as an attack and disable your website. We usually ask for the following (best estimates):
- Date and time (with timezone) of the traffic spike along with duration
- Distribution (is it globally spread or concentrated to a single location)
- Page views
- If you’re using Netlify Functions (and expecting them to have a traffic spike too)
CDN traffic is usually not a problem, but Functions might run into problems at extremely high invocations.