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seanwilson
on Sept 14, 2017
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S3 was down
Hmm, can you explain further? What kind of error code? So Always Online only kicks in when there's no response and not e.g. 500 error codes?
scrollaway
on Sept 15, 2017
[–]
Correct, AFAIK Always Online kicks in when the upstream cannot be reached (eg. connection timeout, unreachable dns etc).
elithrar
on Sept 15, 2017
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You're both sort-of correct. AO kicks in on specific 5xx error codes: 502, 504, and then Cloudflare's 52x codes. It doesn't kick in on 500 or 503, or 4xx errors.
Ref:
https://support.cloudflare.com/hc/en-us/articles/202238800-W...
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