Noted. Thanks for suggestion
*Thanks & Regards,* *Uday Kumar* On Tue, Jun 11, 2024 at 10:35 PM Guillaume Quintard < [email protected]> wrote: > Hi, > > Don't worry too much about it. Uncacheable objects take a minimal amount > of space in the cache, and if an object suddenly becomes cacheable, you can > insert it in the cache, pushing the uncacheable version out. > > I'd say keep 24 hours and worry about big stuff :-) > > Cheers, > > -- > Guillaume Quintard > > > On Tue, Jun 11, 2024 at 4:22 AM Uday Kumar <[email protected]> > wrote: > >> May I know if there is any way to find the best possible TTL? >> I meant to ask for uncacheable objects >> >> *Thanks & Regards,* >> *Uday Kumar* >> >> >> On Tue, Jun 11, 2024 at 4:11 PM Uday Kumar <[email protected]> >> wrote: >> >>> Hello Guillaume, >>> We have made required changes at our end, but we have doubt on giving >>> suitable TTL for uncacheable objects >>> >>> if (beresp.http.Cache-Control ~ "no-cache") { >>> set beresp.ttl = *doubt*; >>> set beresp.uncacheable = true; >>> } >>> >>> FYI; >>> we have ttl of 24hrs for normal objects which are cacheable >>> >>> May I know if there is any way to find the best possible TTL? >>> >>> *Thanks & Regards,* >>> *Uday Kumar* >>> >>> >>> On Tue, May 28, 2024 at 7:07 PM Uday Kumar <[email protected]> >>> wrote: >>> >>>> Hello Guillaume, >>>> Great to know about this, it should work for us! >>>> will check this out >>>> >>>> *Thanks & Regards,* >>>> *Uday Kumar* >>>> >>>> >>>> On Tue, May 28, 2024 at 5:53 PM Guillaume Quintard < >>>> [email protected]> wrote: >>>> >>>>> Hi Uday, >>>>> >>>>> Sure, the classic practice will do nicely: >>>>> >>>>> sub vcl_backend_response { >>>>> if (beresp.http.that-specific-header) { >>>>> # TTL should match the time during which that header is >>>>> unlikely to change >>>>> # do NOT set it to 0s or less ( >>>>> https://info.varnish-software.com/blog/hit-for-miss-and-why-a-null-ttl-is-bad-for-you >>>>> ) >>>>> set beresp.ttl = 2m; >>>>> set beresp.uncacheable = true; >>>>> return (deliver); >>>>> } >>>>> } >>>>> >>>>> The main trick here is beresp.uncacheable, you do not have to return >>>>> immediately if you still have modifications/checks to do on that response. >>>>> >>>>> Would that work for you? >>>>> >>>>> -- >>>>> Guillaume Quintard >>>>> >>>>> >>>>> On Tue, May 28, 2024 at 4:55 AM Uday Kumar <[email protected]> >>>>> wrote: >>>>> >>>>>> Hello all, >>>>>> >>>>>> We need to prevent caching in Varnish based on a specific header from >>>>>> the backend. >>>>>> >>>>>> Could you please suggest the best approach to achieve this? >>>>>> >>>>>> >>>>>> *Thanks & Regards,* >>>>>> *Uday Kumar* >>>>>> _______________________________________________ >>>>>> varnish-misc mailing list >>>>>> [email protected] >>>>>> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc >>>>>> >>>>>
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