$wgUseESI = false;
/**
- * Send X-Vary-Options header for better caching (requires patched Squid)
+ * Send the Key HTTP header for better caching.
+ * See https://datatracker.ietf.org/doc/draft-fielding-http-key/ for details.
+ * @since 1.27
*/
-$wgUseXVO = false;
+$wgUseKeyHeader = false;
/**
- * Add X-Forwarded-Proto to the Vary and X-Vary-Options headers for API
- * requests and RSS/Atom feeds. Use this if you have an SSL termination setup
+ * Add X-Forwarded-Proto to the Vary and Key headers for API requests and
+ * RSS/Atom feeds. Use this if you have an SSL termination setup
* and need to split the cache between HTTP and HTTPS for API requests,
* feed requests and HTTP redirect responses in order to prevent cache
* pollution. This does not affect 'normal' requests to index.php other than