Async key-value store — large structured data, offline cache, not for hot reactive state.

Frontend Architecture

IndexedDB scaling strategy

<h2>Summary</h2>
<p>Near-native compute in browser — port codecs, editors, games from C/Rust. JS↔WASM boundary has marshaling cost; bulk work inside WASM. Threading needs SAB + COOP/COEP. Load size vs JS — measure before adopting for small helpers.</p>
<h2>Code example</h2>
<pre><code class="language-javascript">const wasm = await WebAssembly.instantiateStreaming(
  fetch('/pkg/compress.wasm'),
  imports,
);
const result = wasm.instance.exports.compress(inputPtr, inputLen);
</code></pre>
<h2>Key points</h2>
<ul>
<li>Near-native compute in browser — port codecs, editors, games from C/Rust.</li>
<li>JS↔WASM boundary has marshaling cost; bulk work inside WASM.</li>
<li>Threading needs SAB + COOP/COEP.</li>
<li>Load size vs JS — measure before adopting for small helpers.</li>
</ul>
<h2>Further reading</h2>
<ul>
<li><a href="https://developer.mozilla.org/en-US/docs/WebAssembly">WebAssembly</a></li>
<li><a href="https://developer.mozilla.org/en-US/docs/WebAssembly/Reference/JavaScript_interface">WebAssembly JavaScript API</a></li>
</ul>
<h2>Related concepts</h2>
<ul>
<li><a href="/blogs/level-10-module-federation">Module federation</a></li>
<li><a href="/blogs/level-10-indexeddb-scaling-strategy">IndexedDB scaling strategy</a></li>
</ul>


Near-native compute in browser — port codecs, editors, games from C/Rust.

WebAssembly integration

Webpack/Vite federation — runtime share of remote modules across apps (`remoteEntry.js`).