Proxy Feature Request

Maxim Dounin mdounin at
Thu Sep 9 22:52:49 MSD 2010


On Thu, Sep 09, 2010 at 05:40:56PM +1000, mat h wrote:

> Ok first of all long time mailing list reader here, first time in a
> while ive sent something in.
> Ok, heres my request:
> A module that would allow for a partial proxy_cache based on the last
> modified date returned by the upstream server, basically here's the
> pseudo code for it (persuming that the location block had something
> like "proxy_partial_cache on;")
> Request:
> Fetch Page http://upstream/123.html
> loop headers {
> if(header=='last-modified'){
> if(last_modified_date <= proxy_last_modified_date){
> return proxy_data and terminate_upstream_connection;
> }
> }
> }
> return upstream_data;
> Hope that explains my request,

Looks like what you ask for is usually called cache revalidation.

Using If-Modified-Since in request to backend (with last-modified 
from already cached response) and returning cached copy on 304 
backend reply would be better way to go.

Maxim Dounin

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