Thanks for sharing! I knew that Sourcegraph notebooks were a thing, didn't know that they embedded code like that (I assumed they'd just embed Sourcegraph queries).
Very shallow walkthrough, you need to explain how the lookup table works. C doesn't have hashmaps built in. Without reading the entire source code, for all we know Redis could be using a for loop across 75K entries. You need to explain how the lookup works otherwise junior engineers (especially the sort that came out of JS/Python bootcamps) would get confused.
Caddy - https://sourcegraph.com/notebooks/Tm90ZWJvb2s6MTM2Nw==
ES Lint - https://sourcegraph.com/notebooks/Tm90ZWJvb2s6MTA2OA==