If you also need MISS (our setup does not, we know amount of requests and amount of HIT's), you need to add another condition with set-header X-Cache "MISS"
-- Veiko 2017-12-12 14:10 GMT+02:00 Veiko Kukk <[email protected]>: > Hi, > > I recently had exact same task: to include cache status in response > headers. That's what I did: > > * proxy.config.http.insert_response_via_str 2 > * Using header_rewrite plugin to create additional header with following > config: > cond %{SEND_RESPONSE_HDR_HOOK} [AND] > cond %{HEADER:Via} /(\[cH|\[cR)/ > set-header X-Cache "HIT" > > Veiko > > > 2017-12-12 2:29 GMT+02:00 Igor Cicimov <[email protected]>: > >> You can use the Via header: >> >> ############################################################ >> ################## >> # Via: headers. Docs: >> # https://docs.trafficserver.apache.org/records.config#proxy- >> config-http-insert-response-via-str >> ############################################################ >> ################## >> CONFIG proxy.config.http.insert_request_via_str INT 1 >> CONFIG proxy.config.http.insert_response_via_str INT 3 >> CONFIG proxy.config.http.response_via_str STRING ATS >> >> that will insert values like below that you can decode: >> >> # traffic_via '[cHs f ]' >> Via header is [cHs f ], Length is 8 >> Via Header Details: >> *Result of Traffic Server cache lookup for URL :in cache, fresh >> (a cache "HIT")* >> Response information received from origin server :no server >> connection needed >> Result of document write-to-cache: :no cache write >> performed >> >> for detailed stats (insert_response_via_str INT 3): >> >> # traffic_via 'uScHs f p eN:t cCHi p s ' >> Via header is uScHs f p eN:t cCHi p s , Length is 24 >> Via Header Details: >> Request headers received from client :simple request >> (not conditional) >> *Result of Traffic Server cache lookup for URL :in cache, fresh >> (a cache "HIT")* >> Response information received from origin server :no server >> connection needed >> Result of document write-to-cache: :no cache write >> performed >> Proxy operation result :unknown >> Error codes (if any) :no error >> Tunnel info :no tunneling >> Cache Type :cache >> *Cache Lookup Result :cache hit* >> ICP status :no icp >> Parent proxy connection status :no parent proxy >> or unknown >> Origin server connection status :no server >> connection needed >> >> but you might be already familiar with it and not exactly what you need. >> >> >> On Tue, Dec 12, 2017 at 11:11 AM, Miles Libbey <[email protected]> >> wrote: >> >>> Perhaps use the X-Debug header: >>> https://docs.trafficserver.apache.org/en/7.1.x/admin-guide/p >>> lugins/xdebug.en.html >>> and maybe a global header_rewrite rule to add the magic header to make >>> the debug part appear? >>> >>> On Mon, Dec 11, 2017 at 8:57 AM, Benjamin Morel >>> <[email protected]> wrote: >>> > Sorry if this has been asked before, but I couldn't find it in the >>> docs. >>> > >>> > I'm using ATS as a forward proxy. Is there a way to add a response >>> header to >>> > tell me if the request was a HIT or a MISS? >>> > >>> > Something like: X-Cache: HIT >>> > >>> > Thanks in advance, >>> > Benjamin >>> >> >> >> >
