Changeset 490

Timestamp:

Mar 3, 2009, 10:16:32 PM (11 years ago)

Author:

mnot@…

Message:

define write-through in terms of unsafe request methods

File:

• draft-ietf-httpbis/latest-roy/p6-cache.xml (modified) (1 diff)

draft-ietf-httpbis/latest-roy/p6-cache.xml

@@ -451 +451 @@
         <t>All responses satisfied from cache include an appropriate Age header field; see
             <xref target="header.age" />. <cref>DISCUSS: this currently includes successfully validated responses.</cref></t>
-        <t>All request methods other than GET and HEAD &MUST; be written through the cache to
-          the origin server. Note that such requests might invalidate already stored responses; see
+        <t>Request methods that are unsafe (e.g., POST, PUT, DELETE) &MUST; be written through the cache to
+          the origin server; i.e., A cache must not reply to such a request before having forwarded the request and having received a
+   corresponding response.</t>
+                <t>Also, note that unsafe requests might invalidate already stored responses; see
             <xref target="invalidation.after.updates.or.deletions" />.</t>
         <t>Caches &SHOULD; use the most recent response (as determined by the Date header) when