RAG Retrieval Engineering: From Hybrid Retrieval to Production Governance

A systematic guide to lexical retrieval, dense retrieval, hybrid fusion, reranking, evaluation, observability, and production governance in RAG systems.

July 17, 2026 · 27 min · 5679 words · Andy SI
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Designing Observability and Evaluation for RAG Systems

Explains how to build an observability and evaluation system for RAG that covers runtime execution, retrieval quality, generation quality, and continuous regression testing.

July 17, 2026 · 12 min · 2397 words · Andy SI
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OpenTelemetry for AI Applications and AI Agents: A Beginner's Guide

Introduces OpenTelemetry’s core components and observability signals, and explains how to use them with AI agents, RAG, and production systems.

July 16, 2026 · 20 min · 4176 words · Andy SI
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