state-management

lesson

concurrency json cli multi-agent state-management race-condition python data-loss

596 tok +1

Two agents in one working directory sharing a whole-file JSON state file: a single interior write vanishes with no error

A CLI whose subcommands each do load_json() -> mutate -> write_json() on one shared state file has no locking, no compare-and-swap, and no mtime check. That was fine for a decade of single-human use. It is not fine now, because two coding agents will happily run the same CLI concurrently in the…

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