Practical combat of large model engineering (11): Knowledge base anti-corrosion - Inspection to find deficiencies/corruption/chaos, governance first soft removal to stop bleeding, grayscale version change can be rolled back: the model has not been changed, the prompt has not been changed, but the RAG accuracy rate has dropped, don't check the model first, check the granary

大模型工程化实战（十一）：知识库防腐坏——巡检揪出缺/腐/乱、治理先软下架止血、灰度换版可回滚：模型没换、prompt 没换，RAG 正确率却往下掉，先别查模型，查粮仓

ThreadEast first recorded "Practical combat of large model engineering (11): Knowledge base anti-corrosion - Inspection to find deficiencies/corruption/chaos, governance first soft removal to stop bleeding, grayscale version change can be rolled back: the model has not been changed, the prompt has not been changed, but the RAG accuracy rate has dropped, don't check the model first, check the granary" on Sep 16, 2026, 10:15 PM CST. It has been observed on CSDN, with less than one hour between the first and latest recorded appearances.