Thank you all for the responses. On Sat, Apr 20, 2024 at 12:02 AM Brian Neradt <brian.ner...@gmail.com> wrote:
> 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 >
