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Haitao Wang

Engineering at Tacnode

Haitao Wang is an engineer at Tacnode focused on streaming ingestion and incremental materialized views. He writes about CDC pipelines, real-time data processing, and the engineering challenges of maintaining derived state inside a transactional boundary.

Stream ProcessingCDCMaterialized Views

Posts by Haitao (1)

LLM Model Staleness: Why Your AI Confidently Gives Wrong Answers
AI & Machine Learning

LLM Model Staleness: Why Your AI Confidently Gives Wrong Answers

Your LLM answered correctly last month—now it's confidently wrong. This isn't hallucination. It's model staleness: a structural limitation that fine-tuning and RAG can't solve. Here's the architectural fix that actually works.

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Haitao Wang|Jan 9, 2026