ss="punctuation">}</span>
  <span class="punctuation">]</span>
<span class="punctuation">}</span>
</code></pre><p>For more details on Durable Object migrations, see the <a href="https://developers.cloudflare.com/durable-objects/reference/durable-objects-migrations/">Cloudflare documentation</a>.</p><p>A database <a href="/api/the-essentials/persisting-stores/persister/"><code>Persister</code></a> uses one of two modes: either a JSON serialization of the whole <a href="/api/the-essentials/creating-stores/sto