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+Until today, I had a script named "lifestream.pl". This script was
+triggered via cron once every hour, to fetch various feeds from services
+I use (like github, identi.ca, ...) and to process the result through a
+template and dump the result in a HTML file.
+
+Today I was reading Tatsumaki's code and some examples (Social and
+Subfeedr). Tatsumaki is a "port" tornado (a non blocking server in
+Python), based on Plack and AnyEvent. I though that using this to
+replace my old lifestream script would be a good way to test it. Two
+hours later I have a complete webapp that works (and the code is
+available here).
+
+The code is really simple: first, I define an handler for my HTTP
+request. As I have only one things to do (display entries), the handler
+is really simple:
+
+#+BEGIN_SRC perl
+    package Lifestream::Handler;
+    use Moose;
+    extends 'Tatsumaki::Handler';
+
+    sub get {
+        my $self   = shift;
+        my %params = %{$self->request->params};
+        $self->render(
+            'lifestream.html',
+            {   memes    => $self->application->memes($params{page}),
+                services => $self->application->services
+            }
+        );
+    }
+    1;
+#+END_SRC
+
+For all the get request, 2 methods are called : memes and services. The
+memes get a list of memes to display on the page. The services get the
+list of the various services I use (to display them on a sidebar).
+
+Now, as I don't want to have anymore my lifestream.pl script in cron, I
+will let Tatsumaki do the polling. For this, I add a service to my app,
+which is just a worker.
+
+#+BEGIN_SRC perl
+    package Lifestream::Worker;
+    use Moose;
+    extends 'Tatsumaki::Service';
+    use Tatsumaki::HTTPClient;
+
+    sub start {
+        my $self = shift;
+        my $t;
+        $t = AE::timer 0, 1800, sub {
+            scalar $t;
+            $self->fetch_feeds;
+        };
+    }
+
+    sub fetch_feeds {
+        my ($self, $url) = @_;
+        Tatsumaki::HTTPClient->new->get(
+            $url,
+            sub {
+                #do the fetch and parsing stuff
+            }
+        );
+    }
+#+END_SRC
+
+From now, every 60 minutes, feeds will be checked. Tatsumaki::HTTPClient
+is a HTTP client based on AnyEvent::HTTP.
+
+Let's write the app now
+
+#+BEGIN_SRC perl
+    package Lifestream;
+
+    use Moose;
+    extends "Tatsumaki::Application";
+
+    use Lifestream::Handler;
+    use Lifestream::Worker;
+
+    sub app {
+        my ($class, %args) = @_;
+        my $self = $class->new(['/' => 'Lifestream::Handler',]);
+        $self->config($args{config});
+        $self->add_service(Lifestream::Worker->new(config => $self->config));
+        $self;
+    }
+
+    sub memes {
+    }
+
+    sub services {
+    }
+#+END_SRC
+
+The memes and services method called from the handler are defined here.
+In the app method, I "attch" the "/" path to the handler, and I add the
+service.
+
+and to launch the app
+
+#+BEGIN_SRC perl
+    my $app = Lifestream->app(config => LoadFile($config));
+    require Tatsumaki::Server;
+    Tatsumaki::Server->new(
+        port => 9999,
+        host => 0,
+    )->run($app);
+#+END_SRC
+
+And that's it, I now have a nice webapp, with something like only 200
+LOC. I will keep playing with Tatsumaki as I have more ideas (and
+probably subfeedr too). Thanks to miyagawa for all this code.