我需要varnish的帮助，我有一个varnishconfiguration文件作为default.vcl。
从varnishstat的输出中我可以看出命中率是相当高的。
我也检查了varnishtop -i txurl，看看后端有什么要求。
现在，问题是在HTTP头X-Cache标题丢失和其他清漆头。
从default.vcl有一个选项来删除这些标题但我需要帮助，我怎么把这些标题保存在清漆本身的http响应。
我的default.vcl文件
backend default { .host = "127.0.0.1"; .port = "81"; } # admin backend with longer timeout values. Set this to the same IP & port as your default server. backend admin { .host = "127.0.0.1"; .port = "81"; .first_byte_timeout = 18000s; .between_bytes_timeout = 18000s; } # add your Magento server IP to allow purges from the backend acl purge { "localhost"; "127.0.0.1"; } sub vcl_recv { if (req.restarts == 0) { if (req.http.x-forwarded-for) { set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " + client.ip; } else { set req.http.X-Forwarded-For = client.ip; } } if (req.request != "GET" && req.request != "HEAD" && req.request != "PUT" && req.request != "POST" && req.request != "TRACE" && req.request != "OPTIONS" && req.request != "DELETE" && req.request != "PURGE") { /* Non-RFC2616 or CONNECT which is weird. */ return (pipe); } # purge request if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } ban("obj.http.X-Purge-Host ~ " + req.http.X-Purge-Host + " && obj.http.X-Purge-URL ~ " + req.http.X-Purge-Regex + " && obj.http.Content-Type ~ " + req.http.X-Purge-Content-Type); error 200 "Purged."; } # switch to admin backend configuration if (req.http.cookie ~ "adminhtml=") { set req.backend = admin; } # we only deal with GET and HEAD by default if (req.request != "GET" && req.request != "HEAD") { return (pass); } # normalize url in case of leading HTTP scheme and domain set req.url = regsub(req.url, "^http[s]?://[^/]+", ""); # static files are always cacheable. remove SSL flag and cookie if (req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$") { unset req.http.Https; unset req.http.Cookie; } # not cacheable by default if (req.http.Authorization || req.http.Https) { return (pass); } # do not cache any page from # - index files # - ... # if (req.url ~ "^/(index)") { # return (pass); # } # Don't cache checkout/customer pages, product compare if (req.url ~ "^/(index.php/)?(checkout|customer|catalog/cart/product_compare|wishlist)") { return(pass); } # as soon as we have a NO_CACHE cookie pass request if (req.http.cookie ~ "NO_CACHE=") { return (pass); } # normalize Aceept-Encoding header # http://varnish.projects.linpro.no/wiki/FAQ/Compression if (req.http.Accept-Encoding) { if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv)$") { # No point in compressing these remove req.http.Accept-Encoding; } elsif (req.http.Accept-Encoding ~ "gzip") { set req.http.Accept-Encoding = "gzip"; } elsif (req.http.Accept-Encoding ~ "deflate" && req.http.user-agent !~ "MSIE") { set req.http.Accept-Encoding = "deflate"; } else { # unkown algorithm remove req.http.Accept-Encoding; } } # remove Google gclid parameters set req.url = regsuball(req.url,"\?gclid=[^&]+$",""); # strips when QS = "?gclid=AAA" set req.url = regsuball(req.url,"\?gclid=[^&]+&","?"); # strips when QS = "?gclid=AAA&foo=bar" set req.url = regsuball(req.url,"&gclid=[^&]+",""); # strips when QS = "?foo=bar&gclid=AAA" or QS = "?foo=bar&gclid=AAA&bar=baz" return (lookup); } # sub vcl_pipe { # # Note that only the first request to the backend will have # # X-Forwarded-For set. If you use X-Forwarded-For and want to # # have it set for all requests, make sure to have: # # set bereq.http.connection = "close"; # # here. It is not set by default as it might break some broken web # # applications, like IIS with NTLM authentication. # return (pipe); # } # # sub vcl_pass { # return (pass); # } # sub vcl_hash { hash_data(req.url); if (req.http.host) { hash_data(req.http.host); } else { hash_data(server.ip); } if (!(req.url ~ "^/(media|js|skin)/.*\.(png|jpg|jpeg|gif|css|js|swf|ico)$")) { call design_exception; } return (hash); } sub vcl_hit { return (deliver); } sub vcl_miss { return (fetch); } sub vcl_fetch { if (beresp.status == 500) { set beresp.saintmode = 10s; return (restart); } set beresp.grace = 5m; # add ban-lurker tags to object set beresp.http.X-Purge-URL = req.url; set beresp.http.X-Purge-Host = req.http.host; if (beresp.status == 200 || beresp.status == 301 || beresp.status == 404) { if (beresp.http.Content-Type ~ "text/html" || beresp.http.Content-Type ~ "text/xml") { if ((beresp.http.Set-Cookie ~ "NO_CACHE=") || (beresp.ttl < 1s)) { set beresp.ttl = 0s; return (hit_for_pass); } # marker for vcl_deliver to reset Age: set beresp.http.magicmarker = "1"; # Don't cache cookies unset beresp.http.set-cookie; } else { # set default TTL value for static content set beresp.ttl = 4h; } return (deliver); } return (hit_for_pass); } sub vcl_deliver { # debug info if (resp.http.X-Cache-Debug) { if (obj.hits > 0) { set resp.http.X-Cache = "HIT"; set resp.http.X-Cache-Hits = obj.hits; } else { set resp.http.X-Cache = "MISS"; } set resp.http.X-Cache-Expires = resp.http.Expires; } else { # remove Varnish/proxy header remove resp.http.X-Varnish; remove resp.http.Via; remove resp.http.Age; remove resp.http.X-Purge-URL; remove resp.http.X-Purge-Host; } if (resp.http.magicmarker) { # Remove the magic marker unset resp.http.magicmarker; set resp.http.Cache-Control = "no-store, no-cache, must-revalidate, post-check=0, pre-check=0"; set resp.http.Pragma = "no-cache"; set resp.http.Expires = "Mon, 31 Mar 2008 10:00:00 GMT"; set resp.http.Age = "0"; } } # sub vcl_error { # set obj.http.Content-Type = "text/html; charset=utf-8"; # set obj.http.Retry-After = "5"; # synthetic {" # <?xml version="1.0" encoding="utf-8"?> # <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" # "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> # <html> # <head> # <title>"} + obj.status + " " + obj.response + {"</title> # </head> # <body> # <h1>Error "} + obj.status + " " + obj.response + {"</h1> # <p>"} + obj.response + {"</p> # <h3>Guru Meditation:</h3> # <p>XID: "} + req.xid + {"</p> # <hr> # <p>Varnish cache server</p> # </body> # </html> # "}; # return (deliver); # } # # sub vcl_init { # return (ok); # } # # sub vcl_fini { # return (ok); # } sub design_exception { } 看看vcl_deliver，你会在这里看到下一个条件
if (resp.http.X-Cache-Debug) { # debug headers } else { # remove Varnish/proxy header }
所以，我的问题是：你确定你的应用程序设置Xcachingdebugging头？ 如果没有，你需要关心它或修改VCL，删除这个条件（和“＃删除Varnish /代理标题”部分）