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Expanded on the update() Note: #616

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Expanded on the update() Note: #616

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2 changes: 1 addition & 1 deletion spec/service_worker/index.html
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Expand Up @@ -336,7 +336,7 @@ <h1><code>scope</code></h1>
<spec-section id="service-worker-registration-update">
<h1><code>update()</code></h1>

<p class="note"><code>update()</code> pings the server for an updated version of this script without consulting caches. This is conceptually the same operation that UA does maximum once per every 24 hours.</p>
<p class="note">When loading a registered service worker script, the UA normally checks the HTTP cache for an unexpired copy, falling back on network retrieval otherwise. <code>update()</code> will force the UA to consult the server updated script, ignoring the HTTP cache. <code>update()</code>'s behavior is conceptually the same as what the UA does a maximum once every 24 hours on its own, to prevent service worker scripts from being cached for longer than a day.</p>
<p><dfn id="service-worker-registration-update-method"><code>update()</code></dfn> method must run these steps or their <a href="#dfn-processing-equivalence">equivalent</a>:</p>
<spec-algorithm>
<ol>
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