Before you start · 1 of 3

The log

Everything the machine knows is a list of records — the log. Records are only ever added at the end, and nothing in the log is ever changed. Two pointers read it: the engine, and after it the membrane.

The log
  1. #0a listenerenginemembrane
  2. #1a doer
  3. #2a note
  4. #3readiness
  5. #4the release
  6. end of the log