What is nginx and where does it sit in a MERN deployment?
PICTURE THIS: A REST CALL
Simple meaning
nginx is a reverse proxy and static file server.
WHY — nginx instead of guessing?
Why interviewers care about nginx:
who only read docs from people who shipped.
and tied to Full Stack work.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1nginx is a reverse
proxy and static file server.
- 2It often terminates HTTPS,
serves the React build, and forwards API paths to Node.
- 3It can also gzip
responses and rate-limit traffic before Express sees the request.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
nginx is a reverse proxy and static file server. It often terminates HTTPS, serves the React build, and forwards API paths to Node.