Câu 22: AI-200: Developing AI Cloud Solutions on Azure

You store embeddings in Redis by using keys formatted as doc:(id). Some embeddings are accessed frequently. Others are rarely used. You need to implement a caching strategy that keeps only frequently accessed embeddings in memory. What should you use?

1. A. volatile-ttl
2. B. allkeys-lru — đáp án hiện tại
3. C. EXPIRE command
4. D. time-window expiration