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Headers

Key-value metadata sent with HTTP requests and responses.

Filed under

infraboostor-essentialvibecoder

Headers carry details like content type, authorization, caching, cookies, locale, and CORS rules. They are invisible in the page but often decide how a request is handled.

ELI5

Think of Headers as roads and power for the app city. Key-value metadata sent with HTTP requests and responses.

In practice

Use it when local behavior needs to become a reachable, reliable deployed service. In practice, define the owner, input, output, and failure mode before you rely on it.