Next.js 16: Five Auth Bugs Only Found During Real Integration

The author details implementing a three-layer authentication system in Next.js 16, which passed all unit tests but failed during real integration.

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The fact

Five critical bugs emerged only when components were wired together, exposing session management and redirect flaws.

Part of a series analyzing real-world cases, including a billing-related incident (Part 1)

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#Next.js 16 #authentification #bugs #tests unitaires #intégration

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