obj.cacheable vs expires headers?

Luc Stroobant lstroobant at gmail.com
Mon Feb 8 22:38:49 CET 2010


Poul-Henning Kamp wrote:

> Check your varnishlog output, it shows all headers sent/received
> and look for what cache-control the backend gives varnish...

The cache-control headers of the backend seem to be ok?
(btw, the Varnish test-instance is running on my laptop, but the 
behaviour is exactly the same as it was on the production server)

Luc

First request:

     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664137 1.0
     8 SessionOpen  c 127.0.0.1 48239 127.0.0.1:80
     8 ReqStart     c 127.0.0.1 48239 858012427
     8 RxRequest    c GET
     8 RxURL        c /
     8 RxProtocol   c HTTP/1.0
     8 RxHeader     c Host: www.removed
     8 RxHeader     c Accept: text/html, text/plain, text/css, 
text/sgml, */*;q=0.01
     8 RxHeader     c Accept-Encoding: gzip, compress, bzip2
     8 RxHeader     c Accept-Language: en
     8 RxHeader     c User-Agent: Lynx/2.8.7pre.6 libwww-FM/2.14 
SSL-MM/1.4.1
     8 VCL_call     c recv
     8 VCL_return   c lookup
     8 VCL_call     c hash
     8 VCL_return   c hash
     8 VCL_call     c miss
     8 VCL_return   c fetch
     9 BackendOpen  b default 192.168.1.13 41812 <remote ip> 80
     8 Backend      c 9 default default
     9 TxRequest    b GET
     9 TxURL        b /
     9 TxProtocol   b HTTP/1.1
     9 TxHeader     b Host: www.removed
     9 TxHeader     b Accept: text/html, text/plain, text/css, 
text/sgml, */*;q=0.01
     9 TxHeader     b Accept-Encoding: gzip, compress, bzip2
     9 TxHeader     b Accept-Language: en
     9 TxHeader     b User-Agent: Lynx/2.8.7pre.6 libwww-FM/2.14 
SSL-MM/1.4.1
     9 TxHeader     b X-Forwarded-For: 127.0.0.1
     9 TxHeader     b X-Varnish: 858012427
     9 TxHeader     b X-Forwarded-For: 127.0.0.1
     9 RxProtocol   b HTTP/1.1
     9 RxStatus     b 200
     9 RxResponse   b OK
     9 RxHeader     b Date: Mon, 08 Feb 2010 21:22:19 GMT
     9 RxHeader     b Server: Apache/2.2.3 (CentOS)
     9 RxHeader     b X-Powered-By: PHP/5.2.12
     9 RxHeader     b Set-Cookie: 
SESSbc5f9ce1c97eee1824d1ab670ce3057b=aar9ormanugvueruqlpr327ka5; 
expires=Thu, 04-Mar-2010 00:55:39 GMT; path=/; domain=.removed
     9 RxHeader     b Last-Modified: Mon, 08 Feb 2010 21:19:29 GMT
     9 RxHeader     b ETag: "8f386ae81f34f492ba4abde82d8ef425"
     9 RxHeader     b Expires: Sun, 19 Nov 1978 05:00:00 GMT
     9 RxHeader     b Cache-Control: must-revalidate
     9 RxHeader     b Content-Encoding: gzip
     9 RxHeader     b Transfer-Encoding: chunked
     9 RxHeader     b Content-Type: text/html; charset=utf-8
     8 ObjProtocol  c HTTP/1.1
     8 ObjStatus    c 200
     8 ObjResponse  c OK
     8 ObjHeader    c Date: Mon, 08 Feb 2010 21:22:19 GMT
     8 ObjHeader    c Server: Apache/2.2.3 (CentOS)
     8 ObjHeader    c X-Powered-By: PHP/5.2.12
     8 ObjHeader    c Set-Cookie: 
SESSbc5f9ce1c97eee1824d1ab670ce3057b=aar9ormanugvueruqlpr327ka5; 
expires=Thu, 04-Mar-2010 00:55:39 GMT; path=/; domain=.removed
     8 ObjHeader    c Last-Modified: Mon, 08 Feb 2010 21:19:29 GMT
     8 ObjHeader    c ETag: "8f386ae81f34f492ba4abde82d8ef425"
     8 ObjHeader    c Expires: Sun, 19 Nov 1978 05:00:00 GMT
     8 ObjHeader    c Cache-Control: must-revalidate
     8 ObjHeader    c Content-Encoding: gzip
     8 ObjHeader    c Content-Type: text/html; charset=utf-8
     9 BackendReuse b default
     8 TTL          c 858012427 RFC 0 1265664139 1265664139 280299600 0 0
     8 VCL_call     c fetch
     8 TTL          c 858012427 VCL 1209600 1265664139
     8 VCL_return   c deliver
     8 Length       c 10987
     8 VCL_call     c deliver
     8 VCL_return   c deliver
     8 TxProtocol   c HTTP/1.1
     8 TxStatus     c 200
     8 TxResponse   c OK
     8 TxHeader     c Server: Apache/2.2.3 (CentOS)
     8 TxHeader     c X-Powered-By: PHP/5.2.12
     8 TxHeader     c Set-Cookie: 
SESSbc5f9ce1c97eee1824d1ab670ce3057b=aar9ormanugvueruqlpr327ka5; 
expires=Thu, 04-Mar-2010 00:55:39 GMT; path=/; domain=.removed
     8 TxHeader     c Last-Modified: Mon, 08 Feb 2010 21:19:29 GMT
     8 TxHeader     c ETag: "8f386ae81f34f492ba4abde82d8ef425"
     8 TxHeader     c Content-Encoding: gzip
     8 TxHeader     c Content-Type: text/html; charset=utf-8
     8 TxHeader     c Content-Length: 10987
     8 TxHeader     c X-Cacheable: Yes: ttl=0
     8 TxHeader     c cache-control: max-age = 900
     8 TxHeader     c Date: Mon, 08 Feb 2010 21:22:19 GMT
     8 TxHeader     c X-Varnish: 858012427
     8 TxHeader     c Via: 1.1 varnish
     8 TxHeader     c Connection: close
     8 TxHeader     c age: 0
     8 ReqEnd       c 858012427 1265664139.376405954 
1265664139.577864408 0.000237465 0.201274157 0.000184298
     8 SessionClose c not HTTP/1.1
     8 StatSess     c 127.0.0.1 48239 0 1 1 0 0 1 556 10987
     0 StatAddr     - 127.0.0.1 0 0 1 1 0 0 1 556 10987
     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664140 1.0

A second request:

     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664528 1.0
     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664531 1.0
     8 SessionOpen  c 127.0.0.1 36366 127.0.0.1:80
     8 ReqStart     c 127.0.0.1 36366 858012428
     8 RxRequest    c GET
     8 RxURL        c /
     8 RxProtocol   c HTTP/1.0
     8 RxHeader     c Host: removed
     8 RxHeader     c Accept: text/html, text/plain, text/css, 
text/sgml, */*;q=0.01
     8 RxHeader     c Accept-Encoding: gzip, compress, bzip2
     8 RxHeader     c Accept-Language: en
     8 RxHeader     c User-Agent: Lynx/2.8.7pre.6 libwww-FM/2.14 
SSL-MM/1.4.1
     8 VCL_call     c recv
     8 VCL_return   c lookup
     8 VCL_call     c hash
     8 VCL_return   c hash
     8 Hit          c 858012427
     8 VCL_call     c hit
     8 VCL_return   c deliver
     8 Length       c 10987
     8 VCL_call     c deliver
     8 VCL_return   c deliver
     8 TxProtocol   c HTTP/1.1
     8 TxStatus     c 200
     8 TxResponse   c OK
     8 TxHeader     c Server: Apache/2.2.3 (CentOS)
     8 TxHeader     c X-Powered-By: PHP/5.2.12
     8 TxHeader     c Set-Cookie: 
SESSbc5f9ce1c97eee1824d1ab670ce3057b=aar9ormanugvueruqlpr327ka5; 
expires=Thu, 04-Mar-2010 00:55:39 GMT; path=/; domain=.removed
     8 TxHeader     c Last-Modified: Mon, 08 Feb 2010 21:19:29 GMT
     8 TxHeader     c ETag: "8f386ae81f34f492ba4abde82d8ef425"
     8 TxHeader     c Content-Encoding: gzip
     8 TxHeader     c Content-Type: text/html; charset=utf-8
     8 TxHeader     c Content-Length: 10987
     8 TxHeader     c X-Cacheable: Yes: ttl=0
     8 TxHeader     c cache-control: max-age = 900
     8 TxHeader     c Date: Mon, 08 Feb 2010 21:28:51 GMT
     8 TxHeader     c X-Varnish: 858012428 858012427
     8 TxHeader     c Via: 1.1 varnish
     8 TxHeader     c Connection: close
     8 TxHeader     c age: 0
     8 ReqEnd       c 858012428 1265664531.629857302 
1265664531.629952192 0.000370026 0.000051498 0.000043392
     8 SessionClose c not HTTP/1.1
     8 StatSess     c 127.0.0.1 36366 0 1 1 0 0 0 566 10987
     0 StatAddr     - 127.0.0.1 0 392 2 2 0 0 1 1122 21974
     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664534 1.0
     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664537 1.0
     0 CLI          - Rd ping
     0 CLI          - Wr 0 200 PONG 1265664540 1.0



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