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Loading...Introduction to Production-Ready Authentication
When building modern web applications, one of the most critical components is authentication. Last quarter, our team discovered that our authentication system was not scalable, leading to significant downtime and security concerns. We tried using JSON Web Tokens (JWT) first, but it wasn't until we combined it with OAuth2 and optimized our session security that we achieved a production-ready authentication system.
Understanding JWT
JSON Web Tokens (JWT) are a popular choice for authentication due to their lightweight and stateless nature. However, when I first tried to implement JWT, it broke because I didn't account for token expiration and refresh. Here's an example of how to properly handle JWT expiration and refresh in Node.js:
const jwt = require('jsonwebtoken');
const token = jwt.sign({ userId: 1 }, 'secretKey', { expiresIn: '1h' });
We also had to implement token blacklisting to handle token revocation. This ensured that even if a token was compromised, it couldn't be used after revocation.
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