Name a Django cache backend.
PICTURE THIS: DATA SPLIT
Fit on train, tune on val, report on test once.
Simple meaning
LocMemCache is an in-process dict, useful for development only.
WHY — Caching instead of guessing?
Why interviewers care about Caching:
who only read docs from people who shipped.
and tied to Python 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:
- 1LocMemCache is an in-process
dict, useful for development only.
- 2Redis and Memcached are
the usual production backends.
- 3DummyCache is a no-op
used in tests so cache calls do not leak across cases.
- 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
LocMemCache is an in-process dict, useful for development only. Redis and Memcached are the usual production backends.