Panel-ready MERN Full Stack questions for freshers and experienced developers. Practice at Coding Cadre in Faridabad, or Online from Delhi NCR.
Prefer httpOnly secure cookies with tight CSRF strategy.
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When teams block each other or one domain needs independent scale.
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API integration tests for the contract, component tests for UI states, and one E2E happy path.
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Cross-origin requests with custom headers or methods trigger a CORS preflight.
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Cache at CDN, slim SSR or API work, and avoid sync calls in the critical path.
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Commit .env.example with dummy values, never real secrets.
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