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
