Re: [squid-users] About refresh_pattern
On 27/07/2013 11:03 a.m., Ricardo Rios wrote: El 2013-07-25 21:30, Ricardo Rios escribió: On 26/07/2013 12:04 p.m., Ricardo Rios wrote: Hi list, i am trying to cache some application exe files and updates using refresh_pattern, when i check my regex at some online tool tester, regex works great, but when i use it, i dont see anything else then TCP_MISS/206 on my logs 206 Partial Content means only a portaion of the object was received back from the server. Squid cannot cache these incomplete objects, so refresh_pattern is not relevant. You want range_offset -1 to make Squid fetch the full object when the client requests any sub-portion like this. But be careful, this option applis to *all* requests and can cause Squid to fetch large amout fo data from the network which are never sent to any client (erasing the bandwidth saving benefits of the cache). Amos Ho i see, all the request have diff size, i dont noted that, thanks Amos. I have 2 more questions about this, if all those updates i want to cache, are between 10 and 25 MB, i set range_offset_limit 26 MB and squid is going to download the files and give cache HITS ? even if the client only want a portion of the file ? What happens depends on whether there *exist* any updates larger than 26MB, whether clients try to fetch portions of them past the 26MB limit, and whether Squid already has an object in cache it can HIT on. If Squid already has a cached object to HIT on range_offset_limit is never even used. The client will simply get its Range response generated as requested from the HIT object. Any Range request under the limit gets converted to a full-object GET request (no Range headers) when sent by Squid to the server. The client will get its Range response generated as requested from the reply the server sends back. Any request for Ranges above the limit will be passed on untouched by Squid. The reply is passed back to the client without being cached. Either way the Squid-Client traffic gets optimized down to a Range request and Range reply. Second question, can i set range_offset_limit before the refresh_pattern for those updates, then at the end of those refresh_pattern i set range_offset_limit 0 for the rest ? range_offset_limit and refresh_pattern are completely separate operations and not related. == To make range_offset_limit to apply only on some traffic you require a minimum of Squid-3.2 and some ACLs to specify which requests each limit line applies to. Any range_offset_limit line without ACLs will become the default - no range_offset_limit below it will be used, if all range_offset_limit lines have ACLs the default is 0. Amos
Re: [squid-users] About refresh_pattern
El 2013-07-25 21:30, Ricardo Rios escribió: On 26/07/2013 12:04 p.m., Ricardo Rios wrote: Hi list, i am trying to cache some application exe files and updates using refresh_pattern, when i check my regex at some online tool tester, regex works great, but when i use it, i dont see anything else then TCP_MISS/206 on my logs 206 Partial Content means only a portaion of the object was received back from the server. Squid cannot cache these incomplete objects, so refresh_pattern is not relevant. You want range_offset -1 to make Squid fetch the full object when the client requests any sub-portion like this. But be careful, this option applis to *all* requests and can cause Squid to fetch large amout fo data from the network which are never sent to any client (erasing the bandwidth saving benefits of the cache). Amos Ho i see, all the request have diff size, i dont noted that, thanks Amos. I have 2 more questions about this, if all those updates i want to cache, are between 10 and 25 MB, i set range_offset_limit 26 MB and squid is going to download the files and give cache HITS ? even if the client only want a portion of the file ? Second question, can i set range_offset_limit before the refresh_pattern for those updates, then at the end of those refresh_pattern i set range_offset_limit 0 for the rest ? Thanks for the answers
Re: [squid-users] About refresh_pattern
On 07/27/2013 02:03 AM, Ricardo Rios wrote: I have 2 more questions about this, if all those updates i want to cache, are between 10 and 25 MB, i set range_offset_limit 26 MB and squid is going to download the files and give cache HITS ? even if the client only want a portion of the file ? Second question, can i set range_offset_limit before the refresh_pattern for those updates, then at the end of those refresh_pattern i set range_offset_limit 0 for the rest ? Thanks for the answers Hey, Since the settings are being read from top to bottom the last line wins so never mind the refresh_pattern. Eliezer
[squid-users] About refresh_pattern
Hi list, i am trying to cache some application exe files and updates using refresh_pattern, when i check my regex at some online tool tester, regex works great, but when i use it, i dont see anything else then TCP_MISS/206 on my logs Regex: refresh_pattern download.macromedia.com.*(.exe|.bin) 10800 80% 10800 ignore-no-store ignore-reload reload-into-ims refresh_pattern armdl.adobe.com/.*\.(exe|msp) 10800 80% 10800 ignore-no-store ignore-reload reload-into-ims Logs (lots of this): 1374796130.612 1581 10.0.0.58 TCP_MISS/206 23779 GET http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_active_x.exe - HIER_DIRECT/23.12.163.191 application/octet-stream 1374796131.654997 10.0.0.58 TCP_MISS/206 13916 GET http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_active_x.exe - HIER_DIRECT/23.12.163.191 application/octet-stream 1374796132.166463 10.0.0.58 TCP_MISS/206 7533 GET http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_11_active_x.exe - HIER_DIRECT/23.12.163.191 application/octet-stream and 1374796907.507 2262 10.0.0.58 TCP_MISS/206 14410 GET http://armdl.adobe.com/pub/adobe/reader/win/9.x/9.5.0/es_ES/AdbeRdr950_es_ES.exe - HIER_DIRECT/208.185.44.66 application/octet-stream 1374796909.198 1670 10.0.0.58 TCP_MISS/206 7160 GET http://armdl.adobe.com/pub/adobe/reader/win/9.x/9.5.0/es_ES/AdbeRdr950_es_ES.exe - HIER_DIRECT/208.185.44.66 application/octet-stream 1374796913.060 2786 10.0.0.58 TCP_MISS/206 14201 GET http://armdl.adobe.com/pub/adobe/reader/win/9.x/9.5.0/es_ES/AdbeRdr950_es_ES.exe - HIER_DIRECT/208.185.44.66 application/octet-stream 1374796915.608 1463 10.0.0.58 TCP_MISS/206 12824 GET http://armdl.adobe.com/pub/adobe/reader/win/9.x/9.5.0/es_ES/AdbeRdr950_es_ES.exe - HIER_DIRECT/208.185.44.66 application/octet-stream I am using 50gb rock cache, with 4 workers. maximum_object_size 500 MB What i am doing wrong, thanks in advance for any answer.
Re: [squid-users] About refresh_pattern
On 26/07/2013 12:04 p.m., Ricardo Rios wrote: Hi list, i am trying to cache some application exe files and updates using refresh_pattern, when i check my regex at some online tool tester, regex works great, but when i use it, i dont see anything else then TCP_MISS/206 on my logs 206 Partial Content means only a portaion of the object was received back from the server. Squid cannot cache these incomplete objects, so refresh_pattern is not relevant. You want range_offset -1 to make Squid fetch the full object when the client requests any sub-portion like this. But be careful, this option applis to *all* requests and can cause Squid to fetch large amout fo data from the network which are never sent to any client (erasing the bandwidth saving benefits of the cache). Amos
Re: [squid-users] About refresh_pattern
On 26/07/2013 12:04 p.m., Ricardo Rios wrote: Hi list, i am trying to cache some application exe files and updates using refresh_pattern, when i check my regex at some online tool tester, regex works great, but when i use it, i dont see anything else then TCP_MISS/206 on my logs 206 Partial Content means only a portaion of the object was received back from the server. Squid cannot cache these incomplete objects, so refresh_pattern is not relevant. You want range_offset -1 to make Squid fetch the full object when the client requests any sub-portion like this. But be careful, this option applis to *all* requests and can cause Squid to fetch large amout fo data from the network which are never sent to any client (erasing the bandwidth saving benefits of the cache). Amos Ho i see, all the request have diff size, i dont noted that, thanks Amos.
[squid-users] about refresh_pattern
Hello, Under what cases squid will use refresh_pattern? If the response objects have expire or age headers, squid will follow their values. If the response objects have neither expire nor age headers, squid will not cache them at all. So when will squid use the refresh_pattern settings? Thanks. -- sandy
Re: [squid-users] about refresh_pattern
Sandy lone wrote: Hello, Under what cases squid will use refresh_pattern? If the response objects have expire or age headers, squid will follow their values. Yes. Unless refresh_pattern have been specified with ignore-* HTTP violations. If the response objects have neither expire nor age headers, squid will not cache them at all. No, squid will try to cache unless forbidden (private, no-cache, sets a cookie, authenticated pages). So when will squid use the refresh_pattern settings? Any pages which had no age information and passed the cacheability tests for the above. I think its tested when followup request need to know about freshness, or on garbage collection. Amos -- Please use Squid 2.7.STABLE4 or 3.0.STABLE9
Re: [squid-users] about refresh_pattern
On tor, 2008-10-23 at 16:30 +0800, Sandy lone wrote: Hello, Under what cases squid will use refresh_pattern? If the response objects have expire or age headers, squid will follow their values. Yes. Unless overridden in refresh_pattern override options. If the response objects have neither expire nor age headers, squid will not cache them at all. If there is no Expires then caches are allowed to guess as they like pretty much. Responses which should not be cached MUST have suitable Cache-Control headers, or Expires: now (same as Date header). Age is a different header. You probably meant Last-Modified, from which the doument age can be calculated (document_age = Date - Last-Modified) So when will squid use the refresh_pattern settings? In the default settings with a min-age of 0 when there is no Expires but there is Last-Modified. If a min-age 0 is used then this is used if there is no Last-Modified. Regards Henrik signature.asc Description: This is a digitally signed message part
