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1. RAG Architecture in Bedrock2. Chunking, Ranking, and Freshness

Chunking, Ranking, and Freshness

๐Ÿ“š Knowledge Bases and RAGโฑ 11 minโญ 80 XP

Retrieval Quality Engineering

Most RAG failures come from retrieval setup, not the model. Tune chunking strategy, ranking, and freshness windows.

  • Chunk too large: low relevance precision.
  • Chunk too small: context fragmentation.
  • No freshness strategy: stale operational guidance.

Evaluate retrieval separately from generation to diagnose issues faster.

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A common RAG anti-pattern is:
Testing retrieval metrics
Ignoring chunk strategy and freshness
Adding citations
Using allowlists
Chunking, Ranking, and Freshness Tutorial | Knowledge Bases and RAG โ€” AWS Bedrock Academy