# Try\_files and proxypass

**URL:** <https://www.ruby-forum.com/t/try-files-and-proxypass/242917>\
**Category:** NGINX\
**Created:** [August 7, 2015, 7:39am UTC](https://www.ruby-forum.com/t/try-files-and-proxypass/242917 "2015-08-07T07:39:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [August 7, 2015, 7:39am UTC](https://www.ruby-forum.com/t/try-files-and-proxypass/242917/1 "2015-08-07T07:39:32Z")

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Hi,

I came across such configs and I am curios to know what @app\_$dc;  
matches  
in location configs?

try\_files $uri @app\_$dc;

location @app\_prod { proxy\_pass http://app\_prod;}  
location @app\_qadc { proxy\_pass http://app\_qadc;}

Thanks  
ar

Posted at Nginx Forum:

> **[try\_files and proxypass](https://forum.nginx.org/read.php?2,260841,260841#msg-260841)**
>
> Hi, I came across such configs and I am curios to know what @app\_$dc; matches in location configs? try\_files $uri @app\_$dc; location @app\_prod { proxy\_pass http://app\_prod;} location @app\_qadc { proxy\_pass http://app\_qadc;} Thanks

---

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**Author:** ![arlin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/82dd89/32.png) [@arlin](https://www.ruby-forum.com/u/arlin)\
**Post date:** [August 7, 2015, 9:49am UTC](https://www.ruby-forum.com/t/try-files-and-proxypass/242917/2 "2015-08-07T09:49:13Z")

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On Fri, Aug 07, 2015 at 01:39:05AM -0400, arlin wrote:

Hi there,

> I came across such configs and I am curios to know what @app\_$dc; matches  
> in location configs?
> 
> try\_files $uri @app\_$dc;

Presumably somewhere else in the config, $dc is set to either prod or  
qadc.

try\_files expands variables – for example $uri – before testing.

> location @app\_prod { proxy\_pass http://app\_prod;}  
> location @app\_qadc { proxy\_pass http://app\_qadc;}

It will use whatever location @app\_$dc expands to on this request.

## f

Francis D. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)