Quick question - will APO serve up a static page even if the origin server (Wordpress) is non-responsive?
I don’t know for sure. I’m still trying to learn what APO is doing.
These aren’t specific to APO, but it could serve the cached page in some cases, such as a STALE response from CF-Cache-Status header: https://support.cloudflare.com/hc/en-us/articles/200172516-Understanding-Cloudflare-s-CDN
And if you use the ‘Always Online’ feature then Cloudflare will try to serve a cached copy (including stale and expired). If all else fails, it tries the Wayback Machine for a copy.
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