Lesson 4: Embedding operations: batch, cache, version, measure, swap
31 min read·13 Oct 2026
Module 4 · Lesson 4 · About 55 minutes · Needs: Lessons 1 to 3 of this module (unit vectors, prefixes, the domain-fit test, representations)
The situation
Thursday's update batch changed one sentence in the repair centre notice: repairs may now take 3 extra working days, not 2. Kwame's prototype re-embeds every document each night to catch changes like that. He also wants arctic-embed-xs, which put 28 right documents first in Lesson 2 against bge-small's 26.
Owen asks what re-embedding costs. Grace asks whether arctic is really better, and whether a switch can happen without an outage. The running question is q05, "how long until I get my appliance back from repair"; four documents answer it, the changed notice among them. The Hollin data is simulated.