29 lines
851 B
Markdown
29 lines
851 B
Markdown
---
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description: Configure how Next.js will dispose and keep in memory pages created in development.
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---
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# Configuring onDemandEntries
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Next.js exposes some options that give you some control over how the server will dispose or keep in memory built pages in development.
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To change the defaults, open `next.config.js` and add the `onDemandEntries` config:
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```js
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module.exports = {
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onDemandEntries: {
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// period (in ms) where the server will keep pages in the buffer
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maxInactiveAge: 25 * 1000,
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// number of pages that should be kept simultaneously without being disposed
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pagesBufferLength: 2,
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},
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}
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```
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## Related
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<div class="card">
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<a href="/docs/api-reference/next.config.js/introduction.md">
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<b>Introduction to next.config.js:</b>
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<small>Learn more about the configuration file used by Next.js.</small>
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</a>
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</div>
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