Re: Template Toolkit Cache should do the trick. It allows templates to be read from memory instead of from disk.

Update: Some code:

use Template                   qw( );
use Template::Provider::Memory qw( );

my %mem_drive = (
   'layout'   => [ time(), <<'__EOI__' ],
<p>hello, [% name %]
[% content %]
<p>goodbye, [% name %]
__EOI__

   'somepage' => [ time(), <<'__EOI__' ],
<title>Some Page</title>
[% WRAPPER layout %]
<p>This is the body of the page.
[% END %]
__EOI__
);

my $tt = Template->new({
   LOAD_TEMPLATES => [
      Template::Provider::Memory->new({ MEM_DRIVE => \%mem_drive }),
      Template::Provider->new(),
   ],
});

my $vars = {
   name => 'Dave',
};

my $output;
$tt->process('somepage', $vars)
   or die($tt->error(), "\n");
[download]

The module and the var need a better name.