Re: [squid-users] PARENT_HIT coming as MISS :(

Thank you Amos , I solved the problem. First I applied the
use-storeurl patch into squid 2.7STABLE9, it adds usr-storeurl option
to cache_peer.
Then I had to use the same storeurl rewriter script on both peers. And
it worked with ICP , I am getting internally written URLs as
parent_hit now which is great.

On Fri, Jan 7, 2011 at 9:06 AM, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
> On 31/12/10 04:18, Hasanen AL-Bana wrote:
>>
>> Hello everybody,
>> My setup is :     Client ------>  [Squid Cache Server (A)] ------->
>>  Internet
>>                                                  |
>>                                                  |------------------->
>> [Cache Peer as parent (B)] ------>  Internet
>> The first squid server forwards only Youtube flv requests to its
>> parent , the Squid peer server is configured to cache big flv files
>> from youtube.
>> The youtube cache is working perfectly ,however , ICP replied are
>> coming as miss while the requested file is really a HIT !!
>> here is what I get on my (B) Server :
>> 0 10.0.0.51 UDP_MISS/000 403 ICP_QUERY
>>
>> http://v15.lscache4.c.youtube.com/videoplayback?ip=0.0.0.0&sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Calgorithm%2Cburst%2Cfactor%2Coc%3AU0dYSFdPVF9FSkNNOF9PSVhF&fexp=903812&algorithm=throttle-factor&itag=34&ipbits=0&burst=40&sver=3&expire=1293746400&key=yt1&signature=20098C51B763EDBF1C17FE983EB384AF3EE6AD9F.1685B0C8D59DF91F018E51485507949EE18A25D0&factor=1.25&id=697072249842d2a4&
>> - NONE/- -
>> 10.0.0.51 TCP_HIT/200 3023704 GET
>> http://v15.lscache4.c.youtube.com/videoplayback? - NONE/- video/x-flv
>>
>>
>> And here is what I get on my (A) server :
>> 1293721262.107  11725 127.0.0.1 TCP_MISS/200 3023828 GET
>> http://v15.lscache4.c.youtube.com/videoplayback?
>> -FIRST_PARENT_MISS/youtube video/x-flv
>>
>>
>> The weird thing on the (B) server is that ICP_QUERIES are reported
>> MISS ,hence my (A) server take it as a MISS too  despite the fact it
>> is a realy TCP_HIT on the parent.
>> Here is what I have on my (A) server :
>> acl x-flv rep_mime_type -i video/x-flv
>> acl x-flv rep_mime_type -i x-flv
>> acl x-flv-req urlpath_regex videoplayback
>>
>> icp_query_timeout 10000
>> cache_peer 10.0.0.10 parent  3128 3130  name=youtube weight=10 proxy-only
>> cache_peer_access youtube allow x-flv
>> cache_peer_access youtube allow x-flv-req
>> cache_peer_access youtube deny all
>> Is this a bug or something ?
>
> "something". YouTube URLs differ on every request. In order to get the HIT I
> assume you are using the storeurl_rewrite feature. This is completely
> internal to the parent proxy producing the HIT. The URLs seen by every other
> proxy are still non-identical.
>
> FWIW storeurl does not apply to ICP requests, so they will report MISS.
>
> Amos
> --
> Please be using
>  Current Stable Squid 2.7.STABLE9 or 3.1.10
>  Beta testers wanted for 3.2.0.4
>
Received on Fri Jan 07 2011 - 09:43:11 MST