Reverse proxy notes I keep coming back to

Reverse proxies are simple in diagrams and detailed in production.

Forwarded headers

Most applications need the original host, scheme, and client address:

Host
X-Forwarded-For
X-Forwarded-Proto

If these are wrong, redirects and logs become misleading.

Timeouts shape the product

Proxy timeouts define how file uploads, streaming responses, and slow requests behave. They are part of the user experience, not just operations trivia.