CourseRetrieval-Augmented Generation: The Complete Course · Module 4: Embeddings · part 32 of 95
Part 32 · Module 4: Embeddings

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.

The rest of this course is yours to keep

This course is bought on its own, once, and stays readable afterwards, including the parts added to it later.