Hi Uday, Check your logs, it will probably tell you that the body was already consumed and for this reason it can't retry. If that's the case, check out https://varnish-cache.org/docs/trunk/reference/vmod_std.html#std-cache-req-body
If not, please send us the complete logs (varnish -g request ...) and we'll look at it in greater details. Cheers, -- Guillaume Quintard On Thu, Oct 10, 2024 at 7:31 PM Uday Kumar <[email protected]> wrote: > Hello All, > > We have configured varnish in such a way that if one of the backend > returns *404 code*, varnish retries the request on another healthy > backend. > Varnish version: varnish-6.0.11 > > *Sample Configuration (default.vcl):* > sub *vcl_backend_response *{ > if (beresp.status == 404 { > return(retry); > } > } > > But in some cases, varnish retry is not happening as expected. > > Upon analysis we have found the only difference in requests is *payload* > > > > *Examples:Request Pattern-1:* > /GET > Request URL > HTTP Protocol > Request Headers > > *Request-Pattern-2:* > /GET > Request URL > HTTP Protocol > Request Headers > *payload* > > Please help us understand if there are any scenarios where varnish retries > won't happen. > > *Thanks & Regards,* > *Uday Kumar* > _______________________________________________ > varnish-misc mailing list > [email protected] > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc >
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