当与Starman一起运行时,我想不出一种如何在Dancer应用程序中使用包变量(或任何类似的)。我想这与星人的预叉有某种关系,但这应该是一个特征,而不是一个bug。
下面是一个示例Dancer应用程序:
package nafig;
use Dancer;
my $a = 0;
$b = 0;
$nafig::c = 0;
any '/' => sub {
warn join " ", $a++, $b++, $nafig::c++;
};
start;然后我连续打三个电话到那个应用程序。首先,我在plack参考服务器上运行它,一切都如预期的那样工作:
$ plackup app.pl
HTTP::Server::PSGI: Accepting connections at http://0:5000/
0 0 0 at ... blah-blah-blah
1 1 1 at ... blah-blah-blah
2 2 2 at ... blah-blah-blah但是当我对Starman做同样的事情时,我得到了以下信息。
$ plackup -s Starman app.pl
2013/11/17-23:33:35 Starman::Server (type Net::Server::PreFork) starting! pid(527)
Resolved [*]:5000 to [::]:5000, IPv6
Not including resolved host [0.0.0.0] IPv4 because it will be handled by [::] IPv6
Binding to TCP port 5000 on host :: with IPv6
Setting gid to "1000 1000 20 24 25 29 30 44 46 108 109 115 121 1000"
Starman: Accepting connections at http://*:5000/
0 0 0 at ... blah-blah-blah
0 0 0 at ... blah-blah-blah
0 0 0 at ... blah-blah-blah但是,当快速刷新页面时,有时值会按预期递增。我想,在这些案子里,星人还是一样的。
我很惊讶这个问题从来没有在堆叠溢出问题上被问过。持久化变量对我来说是有用的,没有它们人们怎么跳舞?
提前感谢您的帮助。
发布于 2013-11-17 20:22:39
您将需要一个像缓存::Memcached这样的模块,它允许您在分叉线程上存储状态。
像这样的东西(未经测试)
use strict;
use warnings;
package nafig; #this should start with a capital letter
use Dancer;
use Cache::Memcached;
my $cache = new Cache::Memcached {
'servers' => ['127.0.0.1:11211'],
'compress_threshold' => 10_000,
};
$cache->set("var1", 0);
any '/' => sub {
my $value = $cache->get("var1");
warn join " ", $value++;
$cache->set("var1", $value);
};
start;改编自这里http://perl.postbit.com/how-to-use-memcached-with-perl.html
https://stackoverflow.com/questions/20035318
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