The cache hits about as often as questions repeat

WixQA with embeddings, starting with an empty cache. New questions mixed with paraphrases of earlier ones, as a share of all questions.

0%10%20%30%40%50%10%20%30%40%repeat questions in the trafficequal to the repeat ratecache hitsfalse hits
Repeat questions find their trail 86 to 90% of the time. The line sits a little above the repeat rate because 11% of new questions also find a trail, and 6 in 10 of those reuse a correct section. False hits stay between 2.6 and 3.6%.