Hello!

On Mon, Feb 15, 2016 at 05:11:40AM -0500, vps4 wrote:

> i tried to use like this
>
> server {
>
> set $cache_time 1d;
>
> if ($request_uri = "/") {
> set $cache_time 3d;
> }
>
> if ($request_uri ~ "^/other") {
> set $cache_time 30d;
> }
>
> location / {
> try_files $uri @fetch;
> }
>
> location @fetch {
> proxy_cache_valid 200 301 302 $cache_time;
> }
> }
>
> then i got error "invalid time value "$cache_time" in /etc/nginx/xxx.conf
>
> how can i fix this?

Variables are not supported by the proxy_cache_valid directive.
Use different locations instead, e.g.:

location / {
try_files $uri @fetch;
}

location /other {
try_files $uri @fetch_other;
}

location @fetch {
proxy_cache_valid 200 301 302 3d;
...
}

location @fetch_other {
proxy_cache_valid 200 301 302 30d;
...
}

--
Maxim Dounin
http://nginx.org/

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