Hi Ruei-Bang,
On Fri, Oct 13, 2023 at 08:59:24PM +, Ruei-Bang Chen wrote:
> Hi team,
>
>
> This is related to my previous email regarding adding a fetcher for all
> headers excluding cookies, but I think it might be helpful to open a separate
> thread to discuss this alone as cookie is a special header.
>
> We have a use-case where we need only cookie names but not their values.
> Currently, we have similar fetchers "req.hdr_names" / "res.hdr_names" for
> returning all headers, but no such fetchers for cookies.
>
> Since we are only interested in cookie names and the cookie values can be
> pretty long sometimes, we can avoid unnecessary overhead when we want to
> store / send / parse the string variable if such fetchers are available for
> cookies.
>
> The proposal is to add a new fetcher for extracting cookie names to reduce
> overhead in high QPS.
>
> Let me know what you think.
I don't have any particular opinion on this one. I agree that avoiding to
retrieve the values can be useful. However, please keep in mind that the
request and response code might differ due to the different syntax in both
directions.
Anyway, as long as you think you'll be having use cases for that and
you're careful about performance and making it generic enough, I don't
see any reason for objecting to this ;-)
Thanks,
Willy
