Render advertises static sites as
> Instant Cache Invalidation
> Render insulates your site against failure by offering zero downtime deploys. Your site is built on every push to your repo and each build is fully atomic. As soon as a build succeeds, we deploy it and invalidate our CDN caches instantly so your users always see the latest working version of your site.
That's misleading as render will still serve deleted assets, see
I've been pulling my hair out over this on why we were still seeing old versions of our static site when the cache invalidation was described as "fully atomic". Please at least an option to make "every build should invalidate cache". Arguably this should also be the default behavior.