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-rw-r--r--Zotlabs/Module/Photo.php8
1 files changed, 7 insertions, 1 deletions
diff --git a/Zotlabs/Module/Photo.php b/Zotlabs/Module/Photo.php
index 59dc709e1..162d62815 100644
--- a/Zotlabs/Module/Photo.php
+++ b/Zotlabs/Module/Photo.php
@@ -272,7 +272,13 @@ class Photo extends \Zotlabs\Web\Controller {
$maxage = $expires - time();
header("Expires: " . gmdate("D, d M Y H:i:s", $expires) . " GMT");
- header("Cache-Control: max-age=" . $maxage . $cachecontrol);
+
+ // set CDN/Infrastructure caching much lower than maxage
+ // in the event that infrastructure caching is present.
+ $smaxage = intval($maxage/12);
+
+
+ header("Cache-Control: s-maxage=' .$smaxage. '; max-age=" . $maxage . $cachecontrol);
}