Different error code during proxied backend restart?

[Marcin Kasperski]

At the moment, nginx (I use 0.5.33) reports 404 (Not Found) when the
(reverse-) proxied backend is unavailable (for example, while it is
being restarted).

I think it is somewhat confusing, both for normal users, and for bots.

Wouldn't it be better to report 503 (Service Unavailable)?

-- 
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| Marcin Kasperski   | Systems built by humans are always subject
| http://mekk.waw.pl |          to human error. (Parnas)
|                    |
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