proxy_cache not serving file from edge server !!

[shahzaib shahzaib]

Our caching method is :-

client ----> origin ---> edge.


On Tue, Jul 1, 2014 at 4:57 PM, shahzaib shahzaib <shahzaib.cb at gmail.com>
wrote:

> We've an origin and edge server with nginx-1.6 . Origin web-server(Located
> in U.S) is configured with nginx_geo_module and edge(Local ISP) is
> configured with proxy_cache in order to cache files from origin server and
> serve from their lately. We're using following method for caching with
> proxy_cache :-
>
> 1. client (1.1.1.1) sends mp4 request to origin webserver and geo_module
> in origin checks, if the ip is 1.1.1.1 then pass that client to the edge
> server using proxy_pass.
>
> 2. Edge, checks if the file is in proxy_cache than it should serve the
> file locally and if file is not in proxy_cache, it'll pass back the request
> to origin server and client will be served from origin server as well as
> requested file will also be cached in local server, so next time the edge
> will not have to pass request again to origin server and serve the same
> file via locally.
>
> But, looks like our caching is not working as expected. Our ISP is
> complaining that, whenever edge server serves the file, instead of serving
> that file to local client (1.1.1.1) it serves the file back to origin
> server(U.S) and all outgoing bandwidth is going back to U.S instead of
> local clients (Offcourse bandwidth not being saved).
>
> So i want to ask, if the origin server is passing request to edge server,
> the cached file must be served locally but the request going back to the
> origin server even the cache status: HIT. Following are my configs :-
>
> ORIGIN :-
>
> geo $TW {
>   default 0;
> 1.1.1.1 1;
>
> }
>
>
>
> server {
>         listen  80;
>         server_name  origin.files.com origin.gear.net  origin.gear.com;
>         location / {
>             root   /var/www/html/files;
>             index index.html index.htm index.php;
>
> }
>
>
> location ~ \.(mp4|jpg)$ {
>
>                 proxy_set_header X-Real-IP $remote_addr;
>                 proxy_set_header X-Forwarded-For
> $proxy_add_x_forwarded_for;
>                 proxy_set_header Host $http_host;
>                 if ($TW) {
>                         proxy_pass http://tw002.edge.com:80;
>                 }
>                  mp4;
>                 root /var/www/html/files;
>
>
>                 expires 7d;
>         valid_referers none blocked  video.pk *.video.pk blog.video.pk *.
> facebook.com *.twitter.com *.files.com *.gear.net video.tv *.video.tv
> videomedia.tv www.videomedia.tv embed.videomedia.tv;
>                 if ($invalid_referer) {
>                     return   403;
>                 }
>                 }
>
>  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
>         location ~ \.php$ {
>             root /var/www/html/files;
>             fastcgi_pass   127.0.0.1:9000;
>            fastcgi_index  index.php;
>             fastcgi_param  SCRIPT_FILENAME
> $document_root$fastcgi_script_name;
>             include        fastcgi_params;
>         }
>
>         location ~ /\.ht {
>             deny  all;
>         }
> }
>
> EDGE :-
>
> #proxy_ignore_headers "Set-Cookie";
> proxy_cache_path /data/nginx/cache levels=1:2 keys_zone=static:100m
>                         loader_threshold=200 loader_files=500 inactive=1d
>                         max_size=62g;
>
>
> server {
>
>         listen       80;
>         server_name  tw002.edge.com;
>         root /var/www/html/files;
>         location ~ \.(mp4|jpeg|jpg)$ {
>                root   /var/www/html/files;
>                 mp4;
>                 try_files $uri @getfrom_origin;
>
>             }
>
>
>         location @getfrom_origin {
>         proxy_pass http://origin.files.com:80;
> #       proxy_cache_valid 200 302   60m;
>         proxy_cache_valid  15d;
>         proxy_cache static;
>         proxy_cache_min_uses 1;
>         }
>
>
>
> }
>
> Help will be highly appreciated.
>
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