Reference-grade guide to caching in LLM inference — provider prompt caching (Anthropic cache_control breakpoints, OpenAI automatic prefix caching, Gemini implicit/explicit), semantic caching, and KV-cache internals & management (PagedAttention/vLLM, RadixAttention/SGLang, eviction, quantized KV, mem
Reference-grade guide to caching in LLM inference — provider prompt caching (Anthropic cache_control breakpoints, OpenAI automatic prefix caching, Gemini implicit/explicit), semantic caching, and KV-cache internals & management (PagedAttention/vLLM, RadixAttention/SGLang, eviction, quantized KV, memory pressure, multi-tenant safety). Concrete numbers, formulas, failure modes.