varnish serve old object during refresh

[Jaap van Arragon]

Hello,

Sorry for ³kicking² my question but I really need help with this.

How can I configure varnish 3 so that it will serve cached objects to the
client while the new objects are being fetched from the backed?

Hope to hear something.

Thank you.

Regards,
Jaap van Arragon


On 1/30/12 3:23 PM, "Jaap van Arragon" <j.vanarragon at lukkien.com> wrote:

> Hello,
> 
> How can I serve an old object during the fetch of an expired object or max out
> connection?
> 
> I¹ve configured the grace period in both the vcl_recv as the vcl_fetch.
> 
> I even tried to use the saint mode to give me back an ³old² cached object.
> 
> Can somebody give me help in this matter?
> 
> sub vcl_recv {
> 
>     # Purge through http
>     if (req.request == "PURGE") {
>         if (!client.ip ~ purge) {
>             error 405 "Not allowed.";
>         }
>         ban("req.url ~ " + req.url );
>         error 200 "Purged.";
>     }
> 
>     # Unset all cookies available
>     if (req.http.cookie) {
>         unset req.http.cookie;
>     }
> 
>      if (req.request != "GET" && req.request != "HEAD") {
>         /* We only deal with GET and HEAD by default */
>         return (pass);
>     }
> 
>     # Adding Grace period in case backend lags
>     set req.grace = 3d;
>     return (lookup);
> }
> ....
> sub vcl_fetch {
>     set beresp.grace = 4d;
>     set beresp.saintmode = 50s;
>     set beresp.ttl = 30s;
>     return (deliver);
> }
> 
> 
> 
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> varnish-misc at varnish-cache.org
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