我已启动并运行 varnish 3.0.5,连接到 Plone 4 后端。我的请求已缓存,但无法可靠地清除,实际上只有在 ttl 到期后才会清除。plone.app.caching 是一个插件,每次修改对象时都会发送清除请求。这是 varnishlog:
14 BackendOpen b backend_0 127.0.0.1 54428 127.0.0.1 9088
14 BackendXID b 1585950387
14 TxRequest b PURGE
14 TxURL b /VirtualHostBase/https/example.com/path/VirtualHostRoot/pic/a.jpg
14 TxProtocol b HTTP/1.1
14 TxHeader b Host: localhost:9081
14 TxHeader b X-Varnish: 1585950387
14 BackendClose b backend_0
13 ReqStart c 127.0.0.1 56614 1585950387
13 RxRequest c PURGE
13 RxURL c /VirtualHostBase/https/example.com/path/VirtualHostRoot/pic/a.jpg
13 RxProtocol c HTTP/1.1
13 RxHeader c Host: localhost:9081
13 VCL_call c recv pipe
13 VCL_call c hash
13 Hash c /VirtualHostBase/https/example.com/path/VirtualHostRoot/pic/a.jpg
13 VCL_return c hash
13 VCL_call c pipe pipe
13 Backend c 14 backend_0 backend_0
13 ReqEnd c 1585950387 1412603444.714001656 1412603505.824758053 0.000071526 0.000180483 61.110575914
在 default.vcl 中我配置了 acl 清除器、基本 vcl_hit 和 vcl_miss 函数,并且在 vcl_recv 内部我有:
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "This IP is not allowed to send purge requests.";
}
return (lookup);
}
清除后打开图像时,我仍然会得到旧版本,直到最大使用期限已过期。这是缩短的日志输出:
3 RxURL c /VirtualHostBase/https/example.com:443/path/VirtualHostRoot/pic/a.jpg
3 RxProtocol c HTTP/1.0
3 RxHeader c Host: enertour.bz.it
3 VCL_call c recv lookup
3 VCL_call c hash
3 Hash c /VirtualHostBase/https/example.com/path/VirtualHostRoot/pic/a.jpg
3 VCL_return c hash
3 Hit c 1585950403
3 VCL_call c hit deliver
3 VCL_call c deliver deliver
3 TxHeader c Cache-Control: max-age=0, s-maxage=240, must-revalidate
3 TxHeader c X-Cache-Rule: plone.content.file
3 TxHeader c Age: 181
到目前为止,我所做的就是重写请求的哈希值,以匹配清除请求的哈希值。它们是相同的,但我的对象没有被清除,我不知道为什么?是因为请求主机发生了变化吗?
很高兴收到任何提示!
答案1
今天再次查看我的 vcl 时,我发现在修改过程中,清除函数滑到了我检查请求类型的行下。因此不允许清除,并且它在管道中完成。正确的顺序是:
if (req.request == PURGE) {
...
return (lookup);
}
if (req.request != "(GET|HEAD)" {
...
return (pass);
}