[web-news] master: Cache RSS feeds for 30 minutes

Author: Derick Rethans (derickr) Date: 2026-10-06T13:03:21+01:00 Commit: https://github.com/php/web-news/commit/10d2e56781349b1c377560b275bf61f3a792d3bb Raw diff: https://github.com/php/web-news/commit/10d2e56781349b1c377560b275bf61f3a792d3bb.diff Cache RSS feeds for 30 minutes Changed paths: M group.php M lib/common.php Diff: diff --git a/group.php b/group.php index fee98b1..de571f8 100644 --- a/group.php +++ b/group.php @@ -37,9 +37,10 @@ switch ($format) { case 'rss': header("Content-type: text/xml"); + cacheHeader(60 * 30); echo '<?xml version="1.0" encoding="utf-8"?>' . "\n";?> <rss version="2.0"> - <channel> + <channel> <title><?php echo $cleanBaseHost; ?>: <?php echo $cleanGroupHtml?></title> <link><?php echo $cleanBaseUrl; ?>/group.php?group=<?php echo $cleanGroupUrl?></link> <description></description> @@ -47,6 +48,7 @@ break; case 'rdf': header("Content-type: text/xml"); + cacheHeader(60 * 30); echo '<?xml version="1.0" encoding="utf-8"?>' . "\n"; ?> <rdf:RDF diff --git a/lib/common.php b/lib/common.php index b94e4bb..1c1ef42 100644 --- a/lib/common.php +++ b/lib/common.php @@ -102,10 +102,15 @@ function posttohost($url, $data) return file_get_contents($url, false, $ctx); } +function cacheHeader(int $cacheTimeSeconds = 180) +{ + header("Cache-Control: public, max-age={$cacheTimeSeconds}"); +} + function head($title = "PHP Mailing Lists (PHP News)", int $cacheTimeSeconds = 180) { header("Content-type: text/html; charset=utf-8"); - header("Cache-Control: public, max-age={$cacheTimeSeconds}"); + cacheHeader($cacheTimeSeconds); ?> <!doctype html>