Re: [whatwg/fetch] Add Stale While Revalidate Handling (#853)

dtapuska commented on this pull request.



>          <ol>
-         <li><p>If <var>storedResponse</var>'s <a for=response>header list</a>
-         <a for="header list">contains</a> `<code>ETag</code>`, then <a for="header list">append</a>
-         `<code>If-None-Match</code>` with its value to <var>httpRequest</var>'s
-         <a for=request>header list</a>.
-
-         <li><p>If <var>storedResponse</var>'s <a for=response>header list</a>
-         <a for="header list">contains</a> `<code>Last-Modified</code>`, then
-         <a for="header list">append</a> `<code>If-Modified-Since</code>` with its value to
-         <var>httpRequest</var>'s <a for=request>header list</a>.
+         <li><p>Set <var>response</var> to <var>storedResponse</var>.
+         <li><p>Set <var>response</var>'s <a for=response>cache state</a> to "<code>local</code>".
+         <li><p>In parallel perform <a for=main>main fetch</a> using <var>request</var> with
+          <ul class=brief>
+          <li><p><i>stale content mode</i> set to "<code>disallow</code>" and

`Reload` doesn't work here because it won't cause a revalidation but a forced network load. Nor do we want to append any special Cache-Control headers.

I've added a note.

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