What is a SECRET_KEY?

It is a cryptographic salt used by Django to securely generate password hashes and signed cookies. If it is compromised, a hacker can easily forge session cookies and log in as an administrator.

Why do we separate STATIC and MEDIA files?

STATIC files are CSS/JS written by you. MEDIA files are JPGs uploaded by your users. They are separated because User uploads are untrustworthy and should be served from a different directory (or an entirely different CDN) to prevent malicious code execution.

What does the ALLOWED_HOSTS array do?

It is a strict security measure that prevents 'Host Header Poisoning' attacks. Django will outright block any request if the HTTP Host header does not perfectly match a domain explicitly listed in this array.

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Tutorials

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Settings & Configuration

Master the Django settings.py file. Learn how to securely configure the DEBUG flag, manage third-party applications via INSTALLED_APPS, understand the execution flow of MIDDLEWARE, and connect to production-grade databases like PostgreSQL.

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