I'm implementing authentication for a Next.js frontend with an Express.js backend, and handling cookies in a production environment presented several challenges. Cookies weren't accessible on the frontend, logout didn't clear cookies properly, and cookies were unavailable in Next.js middleware for authentication.

I'm implementing authentication for a Next.js frontend with an Express.js backend, and handling cookies in a production environment presented several challenges. Cookies weren't accessible on the frontend, logout didn't clear cookies properly, and cookies were unavailable in Next.js middleware for authentication.

• next.js
• frontend
• backend
• middleware
• server-side

Share Follow asked Mar 7 at 10:47 Rao ImtinanRao Imtinan 9011 silver badge66 bronze badges

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1 Answer 1

Sorted by: Reset to default 1

Setting Cookies in Express.js Backend

When setting a cookie, you must ensure that the domain, security options, and SameSite settings match your frontend setup. If your frontend and backend are on different subdomains, you need to allow cross-site cookies.

const token ='klldfhjsdhfkjdshfkdsfjk'

const cookiesOpts = {
  httpOnly: true,  
  secure: true,   
  sameSite: 'None', 
  maxAge: 24 * 60 * 60 * 1000, // Cookie expires in 1 day
  domain: '.example', // Allows subdomain sharing (e.g., api.example & app.example)
  path: '/',
};

res.cookie('token', token, cookiesOpts);

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