Ticket #211: i211.diff

p6-cache.xml

@@ -610 +610 @@
   heuristic expiration value &SHOULD; be no more than some fraction of the interval
   since that time. A typical setting of this fraction might be 10%.
 </t>
-<t>
-  <cref anchor="REVIEW-query-string-heuristics">took away HTTP/1.0 query string heuristic uncacheability.</cref>
-</t>
+<x:note>
+  <t>
+    <x:h>Note:</x:h> RFC 2616 (<xref target="RFC2616" x:fmt="," x:sec="13.9"/>)
+    required that caches do not calculate heuristic freshness for URLs with
+    query components (i.e., those containing '?'). In practice, this has not
+    been widely implemented. Therefore, servers are encouraged to send explicit
+    directives (e.g., Cache-Control: no-cache) if they wish to preclude
+    caching.
+  </t>
+</x:note>
 </section>
 </section>
 
@@ -2445 +2452 @@
       <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/208" />:
       "IANA registry for cache-control directives"
     </t>
+    <t>
+      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/211" />:
+      "Heuristic caching of URLs with query components"
+    </t>
   </list>
 </t>
 <t>