I was wondering if proxy_pass has any ability to retry ECONNREFUSED, or
connection timeout, or similar?
It looks like proxy_next_upstream is fairly close to what I want, though
would rather not configure a second server; I just want the initial
to be more robust.
Similarly the upstream directive is close to what I want; you can just
the same server name multiple times to allow for multiple retries.
this gets more complicated if you are passing in a backend URI via a
variable (say, with X-Accel-Redirect).
Would be nice to have a
proxy_connection_retries or similar.