# Semantic cache mechanics (stand-in embeddings, threshold 0.92)

EmbeddingModel.embed(String) returns: float[]
probe                                  cosine   hit at 0.92?
same words, new order                  0.985    true
one word different (A18 for A17)       0.970    true
different question, shares a few words 0.395    false

tenant globex asks the stored question: miss
a cache keyed by feature only, tenant globex asks: 30 days, original packaging.