What is a static library versus a shared library?
PICTURE THIS: RAG CHATBOT
Simple meaning
Static links code into the binary at build time.
WHY — Build instead of guessing?
Why interviewers care about Build:
contrast on Build, 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:
- 1Static links code into
the binary at build time.
- 2Shared loads at runtime
and can be reused by processes.
- 3ABI and deployment differ
a lot.
- 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
Static links code into the binary at build time. Shared loads at runtime and can be reused by processes.