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From Alan Carroll <>
Subject Re: Cache sharing between siblings
Date Thu, 23 Nov 2017 16:38:05 GMT
Sorry for the delay, and thanks Dave for answering. This is a feature under
active development. Oath internally uses a plugin that implements CARP for
sharing across a pod. We are trying to open source it but it's currently
too flaky to support externally. We are working on improving it to the
point where it can be open sourced without embarrassment. In the longer
run, however, there is a "Layer 7 Routing" project (also known as "Next
Hop") which you can track here -

On Thu, Nov 23, 2017 at 9:53 AM, David Carlin <> wrote:

> ATS doesn't have this functionality currently.  I know a couple companies
> are working on it, but nothing to contribute to open source yet as far as I
> know.
> David
> On Thu, Nov 23, 2017 at 9:15 AM, Veiko Kukk <> wrote:
>> Hi again,
>> Are there any better lists/forums to ask such questions?
>> Regards,
>> Veiko
>> 2017-11-15 11:07 GMT+02:00 Veiko Kukk <>:
>>> Hi,
>>> I'm new to ATS, so far we've been using Squid, but due to it's
>>> instability are moving away.
>>> I'm interested in avoiding regional cache duplication in CDN system.
>>> Currently, we have several Squid servers working as siblings and only
>>> pulling from origin if none of them has the object in cache, if sibling has
>>> object in cache, it's pulled from sibling but not stored locally. Only new
>>> content fetched from origin is store locally. Sibling lookup is done via
>>> ICP and has been working quite well so far.
>>> Is similar setup possible with ATS?
>>> I found no information in documentation how to configure siblings (only
>>> parent configuration is documented). Could you point me to right direction?
>>> Regards,
>>> Veiko

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