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better headers to handle caching proxies

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Joshua Seigler 2016-06-26 23:51:40 -04:00
parent de47e4569a
commit cafb664ee5
1 changed files with 3 additions and 0 deletions
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3
buffer.php
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@ -33,6 +33,9 @@
header("Etag: $etag");
header("Expires: ".gmdate("D, d M Y H:i:s", $last_modified_time + CACHE_TIME)." GMT");
// tell any caches that I really mean it with these other headers
header("Cache-Control: max-age=".CACHE_TIME.", must-revalidate");
// exit if not modified
if (@strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $last_modified_time ||
@trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {