Maybe LWP::UserAgent::WithCache would do what you want.

Generally, you should stat the local copy of the page to get its modification time. Pass that through as a header ("If-Modified-Since") in your request to the web server. The server should be able to check the date and either offer up the full page a short "no change" message.

In reply to Re: Web Page Expiry by kyle
in thread Web Page Expiry by jai_dgl

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