Leo Lapworth

At work we scrape data from a slow government website (it's public data and you are allowed to use it, but they don't have a way to download it!).

We thought if only there was a quick way to cache the results as we develop the code...

A CPAN search later... we want a proxy and something to cache

use Plack::Builder;
use Plack::App::Proxy;
use Plack::Middleware::Cache;

my $app
    = Plack::App::Proxy->new( remote => "http://london.pm.org/" )->to_app;

builder {
    enable "Cache",
        match_url => '^/.*',               # everything
        cache_dir => '/tmp/plack-cache';
    $app;
};

Save this as app.psgi, run plackup and point our code to http://localhost:5000/ and it's all working!