Hello!

On Mon, Apr 05, 2010 at 09:46:52PM -0400, bryndole wrote:

> The only such patch I could find was this:
> http://openhack.ru/nginx-patched/
>
> Which only works with the memcached_gzip plugin of which it is a
> part.

For me, 1st google result points to author's site (catap.ru) with
the patch posted alone.

http://www.google.com/search?hl=en&q=upstream_count_limit
http://catap.ru/patches/nginx/ngx_http_upstream_count_limit-0.3.patch

Your google may vary though.

> I too would find this feature extremely helpful. Preventing the
> situation where some request takes just a bit too long and times
> out on server or generates the "wrong" type of error and nginx
> tries upstream server after upstream server, without bound.
>
> Any other suggestions? Is anyone working on a simpler patch?

Usually people just disable proxy_next_upstream (or limit it to
something like "error") and use error_page based fallback instead.
E.g.

upstream backend {
# many servers here
}

location / {
proxy_pass http://backend;
error_page 502 504 = @fallback;
}

location @fallback {
proxy_pass http://backend;
}

Maxim Dounin

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