From ae930172fd73d372ad531240a64c178053ac6385 Mon Sep 17 00:00:00 2001
From: "physikerwelt (Moritz Schubotz)" <wiki@physikerwelt.de>
Date: Wed, 15 Oct 2014 18:42:20 +0200
Subject: [PATCH] Adjust caching times for svg images

In the first period we set the caching time for server-side
caching to 1 week and the value for client-side caching
to 1 hour.

Change-Id: Ieab63dfe9a00f31d64945180d7b0d98b9fe62b39
---
 SpecialMathShowImage.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/SpecialMathShowImage.php b/SpecialMathShowImage.php
index 32f2f08b5..d919e38d8 100644
--- a/SpecialMathShowImage.php
+++ b/SpecialMathShowImage.php
@@ -32,7 +32,7 @@ class SpecialMathShowImage extends SpecialPage {
 			$request->response()->header( "Content-type: image/svg+xml; charset=utf-8" );
 		}
 		if ( $success && !( $this->noRender ) ) {
-			$request->response()->header( 'Cache-Control: public max-age=2419200' ); // 4 weeks
+			$request->response()->header( 'Cache-Control: public, s-maxage=604800, max-age=3600' ); // 1 week (server) 1 hour (client)
 			$request->response()->header( 'Vary: User-Agent' );
 		}
 	}