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我有 2 个 django 项目，设置基本相同。它们都是新闻/文章页面，问题出在第二个页面。第一个项目缓存正确（索引页和文章页），虽然第二个项目只缓存主页，例如：

项目1主页：

curl -X PURGE http://teste.infalms.com.br/ (response: 200[hit] purged)

项目 1 文章页面：

curl -X PURGE http://teste.infalms.com.br/noticias/variedades/pqp-hein/ (response: 200[hit] purged)

项目 2 主页：

curl -X PURGE http://pcmag.infalms.com.br/ (response: 200[hit]

项目 2 文章页面（404 [错过] 不在缓存中。）：

curl -X PURGE http://pcmag.infalms.com.br/noticias/google-street-view-continua-capturando-momentos-estranhos/ 404 [miss] Not in cache.

这是我的 default.vcl：

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

acl purge {
    "localhost";
    "127.0.0.1";
    "198.58.107.57";
}

sub vcl_recv {
# unless sessionid/csrftoken is in the request, don't pass ANY cookies (referral_source,     utm, etc)
if (req.request == "GET" && (req.url ~ "^/static" || (req.http.cookie !~ "sessionid" && req.http.cookie !~ "csrftoken"))) {
    remove req.http.Cookie;
}

# normalize accept-encoding to account for different browsers
# see: https://www.varnish-cache.org/trac/wiki/VCLExampleNormalizeAcceptEncoding
if (req.http.Accept-Encoding) {
    if (req.http.Accept-Encoding ~ "gzip") {
        set req.http.Accept-Encoding = "gzip";
    } elsif (req.http.Accept-Encoding ~ "deflate") {
        set req.http.Accept-Encoding = "deflate";
    } else {
        # unknown algorithm
        remove req.http.Accept-Encoding;
    }
}

# allow PURGE from localhost and 192.168.55...
    if (req.request == "PURGE") {
        if (!client.ip ~ purge) {
            error 405 "Not allowed.";
        }
        return (lookup);
    }

    if (req.request == "BAN") {
        ban("obj.http.x-url ~ " + req.http.x-ban-url + 
        " && obj.http.x-host ~ " + req.http.x-ban-host);
        error 200 "Banned";
    }

    if (req.request == "REFRESH") {
        set req.request = "GET";
        set req.hash_always_miss = true;
    }

    if (req.http.host ~ "pgadmin.infalms.com.br" || req.url ~ "admin" || req.http.host ~ "mediatarget.com.br" || req.http.host ~ "www.mediatarget.com.br")  {
        return(pass);
    }
}

sub vcl_fetch {
    if (beresp.ttl > 0s) {
        /* Remove Expires from backend, it's not long enough */
        unset beresp.http.expires;

        /* Set the clients TTL on this object */
        set beresp.http.cache-control = "max-age=900";

        /* Set how long Varnish will keep it */
        set beresp.ttl = 1w;

        /* marker for vcl_deliver to reset Age: */
        set beresp.http.magicmarker = "1";
    }

# static files always cached
    if (req.url ~ "^/static") {
        unset beresp.http.set-cookie;
        return (deliver);
    }

    # pass through for anything with a session/csrftoken set
    if (beresp.http.set-cookie ~ "sessionid" || beresp.http.set-cookie ~ "csrftoken") {
        return (hit_for_pass);
    } else {
        return (deliver);
    }
}

sub vcl_deliver {
    if (resp.http.magicmarker) {
       /* Remove the magic marker */
       unset resp.http.magicmarker;

       /* By definition we have a fresh object */
        set resp.http.age = "0";
    }
}

sub vcl_hit {
    if (req.request == "PURGE") {
        purge;
        error 200 "[hit] Purged.";
    }
}

sub vcl_miss {
    if (req.request == "PURGE") {
        purge;
        error 404 "[miss] Not in cache.";
    }
}

Varnish 的另一个问题是，有些图像没有被缓存并且根本没有加载。像这个：

http://pcmag.infalms.com.br/media/oldsite_imgs/bodytext_img_862920.jpg

当我尝试清除它时，它会返回 [404]Miss。如果我一直按 F5，它有时会加载，但它完全是随机的。

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