What is the difference between browser caching and server caching?
PICTURE THIS: A REST CALL
Simple meaning
Browser caching uses HTTP headers such as Cache-Control to reuse static assets.
WHY — Caching instead of guessing?
Why interviewers care about Caching:
contrast on Caching, not two memorised paragraphs.
the developer, then one case where picking wrong hurts.
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:
- 1Browser caching uses HTTP
headers such as Cache-Control to reuse static assets.
- 2Server caching stores API
or database results close to the app, often in Redis.
- 3Static React files belong
in a CDN
- 4Give an example
user-specific JSON usually does not.
- 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
Browser caching uses HTTP headers such as Cache-Control to reuse static assets. Server caching stores API or database results close to the app, often in Redis.