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What are parallel routes (@slot) in Next.js and when would you use them?

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01

Understand the problem

Rendering multiple independent pages in the same layout simultaneously.

nextjsparallel-routesroutingadvanced
02

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03

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Parallel routes use @folder 'slots' to render multiple pages in the same layout at once (e.g. a feed and a sidebar), each with independent loading/error states. They're ideal for dashboards, modals, and split views.

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04

Read the code

Layout consuming two slots
// app/dashboard/layout.tsx
export default function Layout({
  children, team, analytics,            // @team and @analytics slots
}: { children: React.ReactNode; team: React.ReactNode; analytics: React.ReactNode }) {
  return <><section>{team}</section><section>{analytics}</section>{children}</>;
}
// Folders: app/dashboard/@team/page.tsx, app/dashboard/@analytics/page.tsx
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