Perl Mojolicious为一个请求生成两个响应

当路由回调时间过长时，mojolicious似乎会请求该路由两次，例如在本应用程序中：

#!/usr/bin/env perl
use Mojolicious::Lite;

get '/' => sub {
  my $c = shift;
  $c->render_later;

  sleep(15);
  say "got here";
  $c->render(template => 'index');
};

当我请求“/”路由时，这是我在日志中得到的：

[Sun Jan 31 20:53:17 2016] [debug] Your secret passphrase needs to be changed
[Sun Jan 31 20:53:17 2016] [debug] GET "/"
[Sun Jan 31 20:53:17 2016] [debug] Routing to a callback
got here
[Sun Jan 31 20:53:32 2016] [debug] Rendering template "index.html.ep" from DATA section
[Sun Jan 31 20:53:32 2016] [debug] Rendering template "layouts/default.html.ep" from DATA section
[Sun Jan 31 20:53:32 2016] [debug] 200 OK (15.007044s, 0.067/s)
[Sun Jan 31 20:53:32 2016] [debug] GET "/"
[Sun Jan 31 20:53:32 2016] [debug] Routing to a callback
got here
[Sun Jan 31 20:53:47 2016] [debug] Rendering cached template "index.html.ep" from DATA section
[Sun Jan 31 20:53:47 2016] [debug] Rendering cached template "layouts/default.html.ep" from DATA section
[Sun Jan 31 20:53:47 2016] [debug] 200 OK (15.005030s, 0.067/s)

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所以我等了两次，我注意到了这一点，因为我有一个应用程序，它必须下载XML并提取信息，这要花很长时间

正如Daskwuff已经提到的，这似乎是一个浏览器问题。有了上面的文件和附加的“app->start”，我可以用Mojolicious 6.14和Chrome48复制它。使用Firefox44，只有一个请求

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似乎Chrome开发者在网站花费的时间太长时，会做出典型的用户“重新加载”行为，这已经是默认行为了。

你确定不是你的浏览器提出了额外的请求吗？