Express.js Course
Express.js
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Beginner

Cookies

Definition

Cookies are small pieces of data stored on the user's browser. In Express, you use `cookie-parser` to read incoming cookies, and `res.cookie()` to send cookies back. Cookies are critical for storing Session IDs or JWTs.

Explain Like I'm New

Cookies are small pieces of data stored on the user's browser.

Interactive Example

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Interview Questions

basic

  • What is the primary purpose of Cookies in Express.js?
  • How do you initialize Cookies?

intermediate

  • How does Cookies integrate with other middleware components?
  • Can you explain a common use case for Cookies?

advanced

  • What are the performance implications of Cookies in a high-traffic production application?
  • How would you debug issues related to Cookies?

trick

  • Is it possible to achieve the same result as Cookies without using Express?

Flash Cards

Question

Define Cookies in your own words.

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Answer

Cookies are small pieces of data stored on the user's browser.

Question

When should you avoid using Cookies?

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Answer

It depends on the specific architectural requirements and performance bottlenecks of your application. Overusing it can sometimes lead to tightly coupled code.