[Tilecache] ETag/Last-Modified or mod_expires

[Mark Deneen]

Alexandre,

#curl -I http://www.example.com/some/url

HTTP/1.1 200 OK
Content-Type: image/png
Expires: Wed, 12 May 2010 07:36:42 GMT
Content-Length: 18154
Date: Thu, 05 Nov 2009 19:36:42 GMT
Server: lighttpd/1.4.23

Here, you can see the expires tag is set.  To know if X-SendFile is
active is a little harder, as the headers sent to the browser will not
indicate anything because the SendFile magic happens between TileCache
and the web server.

If you have SendFile enabled in TileCache, you can try disabling
SendFile in Apache, and see what happens.  If Apache support is
disabled, I believe you should see the X-SendFile header in the response
because Apache does not handle it.

You may need both  

XSendFile on
XSendFileAllowAbove on

in your apache configuration.

Mark


Alexandre Dube wrote:
> Alexandre Dube wrote:
>   
>> (I accidentally replied to the original thread, sorry)
>>
>> I just read about X-SendFile [1].  I'll try that.
>>   
>>     
>
> phpinfo.php reveals that the mod_sendfile is loaded, but it doesn't seem 
> to be used by TileCache.  Is there a way to validate that ?
>
> Thanks,
>
> Alexandre
>
>   
>> Regards,
>>
>> Alexandre
>>
>> [1] 
>> http://n2.nabble.com/PATCH-X-SendFile-and-Expires-headers-td3771732.html#a3771732
>>
>>   
>>     
>
>
>