> > If I understand correctly, ATS does NOT support stale while revalidate, > which is surprising given the RFC was created by a Yahoo-ligan. ;) >
I'm glad you mentioned this. Actually Yahoo open-sourced the functionality for stale while revalidate via the stale_response.so plugin for ATS 10: https://docs.trafficserver.apache.org/en/latest/admin-guide/plugins/stale_response.en.html#stale-response-plugin On Fri, Apr 19, 2024 at 3:38 PM dave seddon <dave.seddon...@gmail.com> wrote: > Depending on your use case, you also want to carefully consider the cache > control headers for the downloaded object. > > If I understand correctly, ATS does NOT support stale while revalidate, > which is surprising given the RFC was created by a Yahoo-ligan. ;) > > On Fri, Apr 19, 2024 at 9:51 AM Leif Hedstrom <zw...@apache.org> wrote: > >> We discussed this in the slack channel. Probably the best option for you >> (other than writing a new plugin) is to use the background_fetch plugin. >> You will still need to trigger a download, but you can avoid having to wait >> for the full response in the client. So, what you’d do is >> >> curl -H “Range: bytes=0-1” https://www.example.com/some/url/foo.img >> >> >> And make sure background_fetch is enabled on this remap rule. No matter >> what you do, you will have to have something that tells ATS to kick off a >> download, and the above is probably as good as any alternative. >> >> Cheers, >> >> — Leif >> >> >> On Apr 17, 2024, at 9:33 AM, Pavel Vazharov <pa...@x3me.net> wrote: >> >> Hi Brian, >> >> Thank you for your response. >> It'll do the job but, as far as I understand it, an external >> functionality will need to download the content in order to push it into >> the ATS. >> The content that I want to write in the ATS storage is on the Internet. >> >> Regards, >> Pavel. >> >> On Wed, Apr 17, 2024 at 6:26 PM Brian Neradt <brian.ner...@gmail.com> >> wrote: >> >>> Hi Pavel, >>> >>> This isn't a direct answer to your question, but are you aware of the >>> ATS HTTP PUSH feature? That allows you to push objects into the ATS cache >>> without the typical caching of proxied response. Can that help you in this >>> situation? >>> >>> >>> https://docs.trafficserver.apache.org/en/latest/admin-guide/configuration/cache-basics.en.html#pushing-content-into-the-cache >>> >>> >>> On Wed, Apr 17, 2024 at 8:41 AM Pavel Vazharov <pa...@x3me.net> wrote: >>> >>>> Hi there, >>>> >>>> Is there a way to use the ATS as an HTTP client to download and store >>>> given content? >>>> I'm aware that I can achieve this with a local HTTP client (wget, curl) >>>> which uses the ATS as a forward proxy and then the ATS will store the >>>> content (which is the actual goal). >>>> I was wondering if there is a way without using an additional HTTP >>>> client so that I can skip the additional content moving between sockets. >>>> >>>> Thanks, >>>> Pavel. >>>> >>> >>> >>> -- >>> "Come to Me, all who are weary and heavy-laden, and I will >>> give you rest. Take My yoke upon you and learn from Me, for >>> I am gentle and humble in heart, and you will find rest for >>> your souls. For My yoke is easy and My burden is light." >>> >>> ~ Matthew 11:28-30 >>> >> >> > > -- > Regards, > Dave Seddon > +1 415 857 5102 > -- "Come to Me, all who are weary and heavy-laden, and I will give you rest. Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and you will find rest for your souls. For My yoke is easy and My burden is light." ~ Matthew 11:28-30
