I build things to understand them.

      Fig. 00 · one sentence, four machines
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01of 04AboutWho's writing this

Ask, and
it answers.

AZ Ask Aleksei{{ status11 }}

Hi there

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Answers are written by me, not generated. Enter to send · ↑ last question

02of 04Machines

Each project is written as a machine you can take apart: the problem, what constrained it, the decision, what broke, and what I learned from it.

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03 / 03 · IN PROGRESS A queue, to understand queues

Rust · append-only log · teardown being written

03of 04Notes · {{ noteSummary }}

Concepts worked through step by step, most with a diagram you can run. Published notes open; the greyed ones are still being written.

Series · Fig. 4.1–4.77 parts · 1 h 49 min

Transaction isolation

From what a transaction is to how SERIALIZABLE works inside Postgres. Each part starts from the one before, and every diagram can be run.

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Nothing matches that yet.

04of 04Contact

the next event is yours

If you're building something interesting, or you think one of these notes is wrong, I'd like to hear about it.