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Next.js + Supabase

middleware.ts

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middleware.tsLines 29-30
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Section 1 of 25
Section 1/25 • Lines 29-30

Next.js Middleware with Supabase Auth

Middleware that runs on every request to refresh auth tokens and protect routes.

Executes before pages render on the server.

Responsibilities

ResponsibilityMechanismBenefit
Token refreshgetUser() in middlewarePrevents expiry logouts
Route protectionRedirect logicUnauthorized users blocked
Cookie managementUpdate response cookiesAuth state stays fresh
### Why Middleware?

  • Runs on every request automatically
  • Can redirect before page renders
  • Refreshes tokens at the edge
  • Single point of auth logic
  • Prevents permission errors
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    Lines 72-69
    ## Middleware Function Request interceptor for auth and routing ### Execution Flow | Step | Acti...
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