Varnish cache with NGINX files not updating WordPress

Question

It seems that Varnish is missing or not validating cache properly. When I try and purge my cache, I get 200 OK Cache successfully cleared, but my page does not update. I am simply making HTML changes to my footer.php (using WordPress) but they are not appearing. I checked my headers and they are as follows:

HTTP/1.1 200 OK
Server: nginx/1.6.0
Content-Type: text/html
Last-Modified: Wed, 23 Apr 2014 18:47:17 GMT
ETag: "53580ab5-2"
Content-Length: 2
Accept-Ranges: bytes
Date: Fri, 10 Oct 2014 15:53:28 GMT
X-Varnish: 21166333
Age: 0
Via: 1.1 varnish
Connection: keep-alive

The "ID of the request that populated the cache" is missing from the X-Varnish header.

So I checked the headers, running the command directly from my VPS where my website is hosted, and it seems to be working ok:

HTTP/1.1 200 OK
Server: nginx/1.6.0
Content-Type: text/html; charset=UTF-8
Vary: Accept-Encoding
X-Powered-By: PHP/5.4.33
X-Pingback: http://example.com/xmlrpc.php
Date: Fri, 10 Oct 2014 15:52:56 GMT
X-Varnish: 21166331 21166330
Age: 21
Via: 1.1 varnish
Connection: keep-alive

Here is my VCL file:

backend default {
  .host = "127.0.0.1";
  .port = "8080";
}

acl purge {
        "localhost";
        "127.0.0.1";
        "173.10.93.222";
}
sub vcl_recv {

if (req.request == "BAN") {
    error 200 "Cached Cleared Successfully.";
}

        if (req.request == "PURGE") {
                if (!client.ip ~ purge) {
                        error 405 "Not allowed.";
                }
                return(lookup);
        }
if (req.url ~ "^/$") {
               unset req.http.cookie;
            }
}
sub vcl_hit {
        if (req.request == "PURGE") {
                set obj.ttl = 0s;
                error 200 "Purged.";
        }
}
sub vcl_miss {
        if (req.request == "PURGE") {
                error 404 "Not in cache.";
        }
if (!(req.url ~ "wp-(login|admin)")) {
                        unset req.http.cookie;
                }
    if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") {
       unset req.http.cookie;
       set req.url = regsub(req.url, "\?.$", "");
    }
    if (req.url ~ "^/$") {
       unset req.http.cookie;
    }
}
sub vcl_fetch {
        if (req.url ~ "^/$") {
                unset beresp.http.set-cookie;
        }
        if (!(req.url ~ "wp-(login|admin)")) {
                unset beresp.http.set-cookie;
        }
}

When I check the website www.isvarnishworking.com I get the following:

Yes! Sort of! Varnish appears to be responding at that url, but the "Age" header is less than 1.

Some assistance would be appreciated, I have a feeling this is something simple. I should note this is running on an NGINX server.

My style.css seemed to update fine, just the DOM of the page is not updating.

It might be worth checking that nginx is serving the changes before blaming Varnish. Use `curl 127.0.0.1:8080/footer.php` on the server or something like that. — Ladadadada, Oct 10 '14 at 18:27

score 1 · Answer 1 · answered Oct 10 '14 at 18:27

1

Nevermind, it seems Varnish is working after the initial page load, but the reason my updated files weren't displaying is because of APC.

answered Oct 10 '14 at 18:27

David

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Varnish cache with NGINX files not updating WordPress

1 Answers1