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Meme Monday

Meme Monday! Today's cover image comes from the last thread . DEV is an inclusive space! Humor in poor taste will be downvoted by mods.

JWT Authentication in Node.js: A Practical Guide (with Express)

Ever logged into an app, closed the tab, come back, and you're still logged in — no password needed? That's almost always JWT doing its job behind the scenes.

  • JWTs consist of header, payload, and signature separated by dots
  • In Node.js + Express, use jsonwebtoken library to sign tokens
  • Always verify tokens with jwt.verify() and set expiration times

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