RAG Debugging Guide: Fix Retrieval Errors Fast

What this post added

This post introduces a debugging guide for RAG systems, focusing on five common failure categories: retrieval, ranking, grounding, freshness, and latency. It details specific causes within each category, such as chunking strategy impact on retrieval, vocabulary mismatch, the role of reranking and hybrid search, LLM grounding issues like context poisoning and distraction, freshness problems due to stale indexes and duplicates, and latency disguised as accuracy issues. It also highlights Redis's capabilities in real-time data integration and incremental vector index updates for addressing freshness and latency.