apache - 如何检查是否为Symfony激活了Varnish？

Question

我想将Varnish用于Symfony和eZ平台CMS。我已按照本教程设置了Varnish:http://book.varnish-software.com/4.0/chapters/Getting_Started.html#exercise-install-varnish

所以我有以下工作服务器:

Varnish在端口80上监听

Varnish在localhost:8080上使用后端

Apache在本地主机上监听:8080

我还设置了我的eZ平台ezplatform.yml和ezplatform.conf，以禁用默认缓存并启用 Varnish (我想)。

我将以下两行添加到ezplatform.conf中，遵循文档 https://doc.ez.no/display/TECHDOC/Using+Varnish:

SetEnv USE_HTTP_CACHE 0 
SetEnv TRUSTED_PROXIES "0.0.0.0"

我将0.0.0.0用作Varnish服务器的IP地址，因为netstat -nlpt为我提供了Varnish服务器的以下地址:

tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      11151/varnishd      
tcp        0      0 127.0.0.1:1234          0.0.0.0:*               LISTEN      11151/varnishd  

所以我想这是正确的值(value)。
然后，我在ezplatform.yml中添加了以下几行(请查看上面的文档):

ezpublish:
    http_cache:
        purge_type: http
    siteaccess:
        list: [site]
        groups:
            http_cache:
              purge_servers: 0.0.0.0:80

Varnish 和httpd重新启动良好。然后，我检查了Varnish是否由本地网站使用，检查了HTTP header ，并且得到了以下信息:

Via: "1.1 varnish-v4"
X-Varnish: "32808"

我想这是一个不错的进步。
无论如何，在Symfony探查器中，我仍然具有以下intel:

Cache Information
   Default Cache    default
   Available Drivers    Apc, BlackHole, FileSystem, Memcache, Redis, SQLite
   Total Requests   349
   Total Hits   349
Cache Service: default
   Drivers  FileSystem
   Calls    349
   Hits     349
   Doctrine Adapter     false
   Cache In-Memory  true

仍然得到这个正常吗？它不应该是Default Cache:varnish之类的东西而不是default吗？如何检查我的Varnish是否正在我的网站上而不是symfony默认缓存中工作？

顺便说一句，这是我的vcl文件:

#
# This is an example VCL file for Varnish.
#
# It does not do anything by default, delegating control to the
# builtin VCL. The builtin VCL is called when there is no explicit
# return statement.
#
# See the VCL chapters in the Users Guide at https://www.varnish-cache.org/docs/
# and https://www.varnish-cache.org/trac/wiki/VCLExamples for more examples.

# Marker to tell the VCL compiler that this VCL has been adapted to the
# new 4.0 format.
vcl 4.0;
import directors;

# Default backend definition. Set this to point to your content server.
backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_init {
    new backs = directors.hash();
    backs.add_backend(default, 1);
}

sub vcl_recv {
    # Happens before we check if we have this in cache already.
    #
    # Typically you clean up the request here, removing cookies you don't need,
    # rewriting the request, etc.
    set req.http.X-cookie = req.http.cookie;
    if (!req.http.Cookie ~ "Logged-In") {
         unset req.http.Cookie;
    }
    if (req.url ~ "\.(png|gif|jpg|png|css|js|html)$") {
         unset req.http.Cookie;
    }
}

sub vcl_backend_response {
    # Happens after we have read the response headers from the backend.
    #
    # Here you clean the response headers, removing silly Set-Cookie headers
    # and other mistakes your backend does.
}

sub vcl_deliver {
    # Happens when we have all the pieces we need, and are about to send the
    # response to the client.
    #
    # You can do accounting or modifying the final object here.
}

即使尚未完成，我也无法了解Symfony默认缓存的工作方式，因为我已在配置文件中将其禁用。

感谢您的帮助。

Answer 1

如果你看到类似的东西

Via: "1.1 varnish-v4"
X-Varnish: "32808"

你的 Varnish 正在工作。为什么要禁用symfony缓存？您可以同时使用两者...可能有意义，也可能没有意义。这在很大程度上取决于程序逻辑。

如果您想在开发过程中更深入地了解 Varnish ，可以添加以下几行:

sub vcl_deliver {
  if (obj.hits > 0) { # Add debug header to see if it's a HIT/MISS
    set resp.http.X-Cache = "HIT";
  } else {
    set resp.http.X-Cache = "MISS";
  }
  # show how ofthe the object created a hit so far (reset on miss)
  set resp.http.X-Cache-Hits = obj.hits;
}