Varnish cached 'MISS status' object?
- by Hesey
My site uses nginx, varnish, jboss. And some url will be cached by varnish, it depends a response header from jboss.
The first time, jboss tells varnish doesn't cache this url. Then the second request, jboss tells varnish to cache, but varnish won't cache it. I used varnishstat and found that 1 object is cached in Varnish, is that the 'MISS status' object?
I remove grace code and the problem still exists. When I PURGE this url, varnish works fine and cache the url then. But I can't PURGE so much urls every startup time, how can I fix this?
The configuration:
acl local {
"localhost";
}
backend default {
.host = "localhost";
.port = "8080";
.probe = {
.url = "/preload.htm";
.interval = 3s;
.timeout = 1s;
.window = 5;
.threshold = 3;
}
}
sub vcl_deliver {
if (req.request == "PURGE") {
remove resp.http.X-Varnish;
remove resp.http.Via;
remove resp.http.Age;
remove resp.http.Content-Type;
remove resp.http.Server;
remove resp.http.Date;
remove resp.http.Accept-Ranges;
remove resp.http.Connection;
set resp.http.keeplive="true";
} else {
if (obj.hits > 0) {
set resp.http.X-Cache = "HIT";
} else {
set resp.http.X-Cache = "MISS";
}
}
}
sub vcl_recv {
if(req.url ~ "/check.htm"){
error 404 "N";
}
if( req.http.host ~ "store." || req.request == "POST"){
return (pipe);
}
if (req.backend.healthy) {
set req.grace = 30s;
} else {
set req.grace = 10m;
}
set req.http.x-cacheKey = "0";
if(req.url ~ "/shop/view_shop.htm" || req.url ~ "/shop/viewShop.htm" || req.url ~ "/index.htm"){
if(req.url ~ "search=y"){
set req.http.x-cacheKey = req.http.host + "/search.htm";
}else if(req.url !~ "bbs=y" && req.url !~ "shopIntro=y" && req.url !~ "shop_intro=y"){
set req.http.x-cacheKey = req.http.host + "/index.htm";
}
}else if(req.url ~ "/search"){
set req.http.x-cacheKey = req.http.host + "/search.htm";
}
if( req.http.x-cacheKey == "0" && req.url !~ "/i/"){
return (pipe);
}
if (req.request == "PURGE") {
if (client.ip ~ local) {
return (lookup);
} else {
error 405 "Not allowed.";
}
}
if (req.url ~ "/i/") {
set req.http.x-shop-url = req.original_url;
}else {
unset req.http.cookie;
}
}
sub vcl_fetch {
set beresp.grace = 10m;
#unset beresp.http.x-cacheKey;
if (req.url ~ "/i/" || req.url ~ "status" ){
set beresp.ttl = 0s; /* ttl=0 for dynamic content */
} else if(beresp.http.x-varnish-cache != "1"){
set beresp.do_esi = true; /* Do ESI processing */
set beresp.ttl = 0s;
unset beresp.http.set-cookie;
} else {
set beresp.do_esi = true; /* Do ESI processing */
set beresp.ttl = 1800s;
unset beresp.http.set-cookie;
}
}
sub vcl_hash {
hash_data(req.http.x-cacheKey);
return (hash);
}
sub vcl_error {
if (req.request == "PURGE") {
return (deliver);
} else {
set obj.http.Content-Type = "text/html; charset=gbk";
synthetic {"<!--ve-->"};
return (deliver);
}
}
sub vcl_hit {
if (req.request == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
sub vcl_miss {
if (req.request == "PURGE") {
error 404 "N";
}
}
