Next.js renames middleware to proxy, showcases 22-line implementation

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Next.js 16 has deprecated the 'middleware' file convention and renamed it to 'proxy'. The change requires developers to rename their middleware files and export functions accordingly. The article presents a 22-line proxy implementation that handles CORS for API routes and refreshes user authentication sessions. A key configuration uses a regex matcher to exclude static assets and webhook routes from proxy processing for efficiency and correctness.

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