L2Technical foundation 11 min
How to Lower Cost of Retrieval: The Six Stages and the Five Layers
Cost of retrieval is the total work a search engine spends to crawl, render, parse, extract, verify, and serve a…
wisal Sep 2026
L2 · one layer of six
Technical foundation
Crawling, rendering, and the mechanics of being read. A weak layer caps every layer above it, so work here compounds only once the layers beneath it hold.
L2 · Technical foundation
One article in this view.
A useful next step
Is this the layer holding you back?
The diagnostic checks all six and names the lowest weak one, so you fix the constraint rather than the symptom.