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https://issues.apache.org/jira/browse/TS-3652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568404#comment-14568404
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Sudheer Vinukonda commented on TS-3652:
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Discussed with [~zwoop] and it seems to us that, this behavior is actually a
bug to not honor the API set cache lookup key, so we will just fix this without
a config setting.
> During 3xx redirect follow, TS uses the redirect url as the cache key
> ignoring any cache key set via API
> --------------------------------------------------------------------------------------------------------
>
> Key: TS-3652
> URL: https://issues.apache.org/jira/browse/TS-3652
> Project: Traffic Server
> Issue Type: Improvement
> Components: HTTP
> Reporter: Sudheer Vinukonda
>
> Currently, during 3xx redirect follow, TS uses the redirect url (as received
> in the *Location* header of the 3xx response) as the cache key for storing
> the subsequent response to the redirect follow request). This works fine in
> most cases, since, the original client request would have cached the 3xx
> response and the final response would still be derived using the redirect
> follow url. This also allows direct requests to the redirect follow location
> be served from the cache efficiently.
> However, this is not desirable in some cases, especially when there's a TS
> API (plugin) modifying the cache key and wanting to store the final response
> against the modified cache key directly.
> Proposing to add a config setting to allow storing API set cache key during
> redirect follow.
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