System Design Patterns: From Fundamentals to Real Systems

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Reverse Proxy

The Pattern

A server that stands in front of your real servers: it receives every request, does the front-desk chores, and forwards the request onward. Clients never talk to the building's insides: they talk to the receptionist.

To feel why the primitive exists, picture the alternative: your application server plugged straight into the internet. Now the app code owns TLS certificates. It serves images and JavaScript alongside business logic. Its address and internals are public knowledge. And: the underrated killer: it talks directly to the world's worst connections

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