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Jul 28, 2026Semantic Caching for LLM APIs: How Similarity-Based Response Caching Actually Works
How semantic caching for LLM APIs actually works, real threshold conventions from GPTCache/Redis/LangChain, and the correctness risk of a mistuned cache -- with a documented false-positive table and mitigation patterns.
Jul 28, 202616 min read0 reactions0 comments