11
If-Modified-Since: Wed, 15 Feb 2012 07:25:00 CET सेट के साथ सीधे बैकएंड पर एक GET अनुरोध भेजते समय, अपाचे सही रूप से 304 को कोई सामग्री नहीं देता है।वार्निश को 304 अनमोडिफाइड क्यों नहीं भेजा जाता है जब-संशोधित-हेडर भेजा जाता है?
जब मैं वार्निश 3.0.2 के माध्यम से एक ही अनुरोध भेजता हूं, तो यह 200 के साथ प्रतिक्रिया करता है और क्लाइंट के पास पहले से ही सभी सामग्री भेजता है। जाहिर है, यह बैंडविड्थ का अच्छा उपयोग नहीं है। मेरी समझ यह है कि वार्निश इस हेडर के बुद्धिमान हैंडलिंग का समर्थन करता है और उसे 304 भेजना चाहिए, इसलिए मुझे लगता है कि मैंने अपनी .vcl फ़ाइल में कुछ गलत किया होगा।
16 SessionOpen c 84.97.17.233 64416 :80
16 ReqStart c 84.97.17.233 64416 1597323690
16 RxRequest c GET
16 RxURL c /fr/CS/CS_AU-Maboreke-6-6-2004.pdf
16 RxProtocol c HTTP/1.0
16 RxHeader c Host: www.quotaproject.org
16 RxHeader c User-Agent: Sprawk/1.3 (http://www.sprawk.com/)
16 RxHeader c Accept: */*
16 RxHeader c Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
16 RxHeader c Connection: close
16 RxHeader c If-Modified-Since: Wed, 15 Feb 2012 07:25:00 CET
16 VCL_call c recv lookup
16 VCL_call c hash
16 Hash c /fr/CS/CS_AU-Maboreke-6-6-2004.pdf
16 Hash c www.quotaproject.org
16 VCL_return c hash
16 Hit c 1597322756
16 VCL_call c hit
16 VCL_acl c NO_MATCH CTRLF5
16 VCL_return c deliver
16 VCL_call c deliver deliver
16 TxProtocol c HTTP/1.1
16 TxStatus c 200
16 TxResponse c OK
16 TxHeader c Server: Apache
16 TxHeader c Last-Modified: Wed, 09 Jun 2004 16:07:50 GMT
16 TxHeader c Vary: Accept-Encoding
16 TxHeader c Content-Type: application/pdf
16 TxHeader c Date: Wed, 22 Feb 2012 18:25:05 GMT
16 TxHeader c Age: 12432
16 TxHeader c Connection: close
16 Gzip c U D - 107685 115763 80 796748 861415
16 Length c 98304
16 ReqEnd c 1597323690 1329935105.713264704 1329935106.208528996 0.000071526 0.000068426 0.495195866
16 SessionClose c EOF mode
16 StatSess c 84.97.17.233 64416 0 1 1 0 0 0 203 98304
यदि मैं यह सही ढंग से समझ, वस्तु तो यह बैकएंड संपर्क करने की आवश्यकता नहीं है वार्निश के कैश में पहले से ही है, लेकिन यह पहले से ही Last-Modified जानता है तो क्यों यह नहीं होगा:
Varnishlog इस देता है 304 के साथ जवाब?
backend idea {
# .host = "www.idea.int";
.host = "83.145.60.235"; # IDEA's public website IP
.port = "80";
}
backend qp {
# .host = "www.quotaproject.org";
.host = "83.145.60.235"; # IDEA's public website IP
.port = "80";
}
#
#Below is a commented-out copy of the default VCL logic. If you
#redefine any of these subroutines, the built-in logic will be
#appended to your code.
#
sub vcl_recv {
# force domain so that Apache handles the VH correctly
if (req.http.host ~ "^qp" || req.http.host ~ "quotaproject.org$") {
set req.http.Host = "www.quotaproject.org";
set req.backend = qp;
} else {
# default to idea.int
set req.http.Host = "www.idea.int";
set req.backend = idea;
}
# Before anything else we need to fix gzip compression
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
# No point in compressing these
remove req.http.Accept-Encoding;
} else if (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} else if (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm
remove req.http.Accept-Encoding;
}
}
# ajax requests bypass cache. TODO: Make sure you Javascript implementation for AJAX actually sets XMLHttpRequest
if (req.http.X-Requested-With == "XMLHttpRequest") {
return(pass);
}
if (req.request != "GET" &&
req.request != "HEAD" &&
req.request != "PUT" &&
req.request != "POST" &&
req.request != "TRACE" &&
req.request != "OPTIONS" &&
req.request != "DELETE") {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
# Purge everything url - this isn't the squid way, but works
if (req.url ~ "^/varnishpurge") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
if (req.url == "/varnishpurge") {
ban("req.http.host == " + req.http.host + " && req.url ~ ^/");
error 841 "Purged site.";
}
else {
ban("req.http.host == " + req.http.host + " && req.url ~ ^" + regsub(req.url, "^/varnishpurge(.*)$", "\1") + "$");
error 842 "Purged page.";
}
}
# spoof the client IP (taken from http://utvbloggen.se/snabb-guide-till-varnish/)
remove req.http.X-Forwarded-For;
set req.http.X-Forwarded-For = client.ip;
# Force delivery from cache even if other things indicate otherwise
if (req.url ~ "\.(flv)") {
# pipe flash start away
return(pipe);
}
if (req.url ~ "\.(jpg|jpeg|gif|png|tiff|tif|svg|swf|ico|css|vsd|doc|ppt|pps|xls|pdf|mp3|mp4|m4a|ogg|mov|avi|wmv|sxw|zip|gz|bz2|tgz|tar|rar|odc|odb|odf|odg|odi|odp|ods|odt|sxc|sxd|sxi|sxw|dmg|torrent|deb|msi|iso|rpm)$") {
# cookies are irrelevant here
unset req.http.Cookie;
unset req.http.Authorization;
}
# Force short-circuit to the real site for these dynamic pages
if (req.url ~ "/customcf/" || req.url ~ "/uid/editData.cfm" || req.url ~ "^/private/") {
return(pass);
}
# Remove user agent, since Apache will server these resources the same way
if (req.http.User-Agent) {
set req.http.User-Agent = "";
}
if (req.http.Cookie) {
# removes all cookies named __utm? (utma, utmb...) - tracking thing
set req.http.Cookie = regsuball(req.http.Cookie, "(^|;) *__utm.=[^;]+;? *", "\1");
# remove cStates for RHM boxes (the server doesn't need to know these, JS will handle this client-side)
set req.http.cookie = regsub(req.http.cookie, "(;)?cStates=[^;]*", ""); #cStates might sometimes have a blank value
# remove ColdFusion session cookie stuff
if (!req.url ~ "^/publications/" && !req.url ~ "^/uid/admin/") {
set req.http.cookie = regsub(req.http.cookie, "(;)?CFID=[^;]+", "");
set req.http.cookie = regsub(req.http.cookie, "(;)?CFTOKEN=[^;]+", "");
}
# Remove the cookie header if it's empty after cleanup
if (req.http.cookie ~ "^;? *$") {
# The only cookie data left is a semicolon or spaces
remove req.http.cookie;
}
}
}
#
# Called when the requested object was not found in the cache
#
sub vcl_hit {
# Allow administrators to easily flush the cache from their browser
if (client.ip ~ CTRLF5) {
if (req.http.pragma ~ "no-cache" || req.http.Cache-Control ~ "no-cache") {
set obj.ttl = 0s;
return(pass);
}
}
}
#
# Called when the requested object has been retrieved from the
# backend, or the request to the backend has failed
#
sub vcl_fetch {
set beresp.grace = 1h;
# strip the cookie before the image is inserted into cache.
if (req.url ~ "\.(jpg|jpeg|gif|png|tiff|tif|svg|swf|ico|css|vsd|doc|ppt|pps|xls|pdf|mp3|mp4|m4a|ogg|mov|avi|wmv|sxw|zip|gz|bz2|tgz|tar|rar|odc|odb|odf|odg|odi|odp|ods|odt|sxc|sxd|sxi|sxw|dmg|torrent|deb|msi|iso|rpm)$") {
remove beresp.http.set-cookie;
set beresp.ttl = 100w;
}
# Remove CF session cookies for everything but the publications subsite
if (!req.url ~ "^/publications/" && !req.url ~ "/customcf/" && !req.url ~ "^/uid/admin/" && !req.url ~ "^/uid/editData.cfm") {
remove beresp.http.set-cookie;
}
if (beresp.ttl < 48h) {
set beresp.ttl = 48h;
}
}
#
# Called before a cached object is delivered to the client
#
sub vcl_deliver {
# We'll be hiding some headers added by Varnish. We want to make sure people are not seeing we're using Varnish.
remove resp.http.X-Varnish;
remove resp.http.Via;
# We'd like to hide the X-Powered-By headers. Nobody has to know we can run PHP and have version xyz of it.
remove resp.http.X-Powered-By;
}
किसी को भी समस्या या समस्याओं को देख सकते हैं:
और यहाँ मेरी VCL फ़ाइल है?
अद्यतन: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.3
Note: When handling an If-Modified-Since header field, some
servers will use an exact date comparison function, rather than a
less-than function, for deciding whether to send a 304 (Not
Modified) response.
के अनुसार यह इस वार्निश के व्यवहार हो सकता है लगता है। मैं एक और तारीख भेज रहा हूं जो वास्तविक फ़ाइल की अंतिम संशोधित तारीख से पिछली है, लेकिन वास्तव में वर्निश में कैश नहीं किया गया है।