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Integrate LangFuse for Observability
Linked challenge: Document AI: Summarize & Extract from Enterprise Content
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Integrate LangFuse into your LlamaIndex RAG pipeline to monitor performance. Configure `LangfuseCallbackHandler` and ensure all LLM calls, embedding calls, and retrieval steps are traced. Explain how you would use LangFuse to debug common RAG issues like low recall or hallucination by inspecting traces. Provide Python code snippets showing the LangFuse integration setup, e.g., `Settings.callback_manager = CallbackManager([LangfuseCallbackHandler(...)])`.