Welcome to your interview.
The question is on your right: Keep a Daily RAG Index Fresh. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
You are maintaining a RAG system for an internal knowledge base where source documents change every day. Some docs are edited in place, some are replaced, and some are deleted. The team has started seeing stale answers and mismatches between the index and the source of truth.
How would you keep the RAG index fresh when source documents change daily?