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API ReferenceFile-system conventionsRoute Segment Config

Route Segment Config

Last updated March 13, 2026

The Route Segment Config options allow you to configure the behavior of a Page, Layout, or Route Handler by directly exporting the following variables:

Option	Type	Default
`dynamicParams`	`boolean`	`true`
`runtime`	`'nodejs' \| 'edge'`	`'nodejs'`
`preferredRegion`	`'auto' \| 'global' \| 'home' \| string \| string[]`	`'auto'`
`maxDuration`	`number`	Set by deployment platform

Version History

Version
`v16.0.0`	`dynamic`, `dynamicParams`, `revalidate`, and `fetchCache` removed when Cache Components is enabled. See Caching and Revalidating (Previous Model).
`v16.0.0`	`export const experimental_ppr = true` removed. A codemod is available.
`v15.0.0-RC`	`export const runtime = "experimental-edge"` deprecated. A codemod is available.

dynamicParams

API reference for the dynamicParams route segment config option.

maxDuration

API reference for the maxDuration route segment config option.

preferredRegion

API reference for the preferredRegion route segment config option.

runtime

API reference for the runtime route segment config option.

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