# `Continuum.Runtime.Journal.InMemory`
[🔗](https://github.com/Yyeger/Continuum/blob/main/lib/continuum/runtime/journal/in_memory.ex#L1)

In-memory journal backed by a single GenServer.

Used by tests and by `Continuum.Test`. Not durable — process death loses
all journaled events.

# `child_spec`

Returns a specification to start this module under a supervisor.

See `Supervisor`.

# `consume_buffered_signal!`

Pop the oldest buffered payload for signal `name`, or return `:none`.

Called by `Continuum.Runtime.Effect` when an `await signal(name)` reaches
the live tail; the consumed payload is journaled as `signal_received` with
the await's command identity.

# `deliver_signal!`

Buffer a signal in the run's in-memory mailbox.

Mirrors the `continuum_signals` semantics of the Postgres adapter: the
payload is held until a live `await signal(name)` consumes it, so signals
arriving early or out of order wait for their matching await instead of
corrupting the journal tail. Returns `{:error, :not_found}` when the run
does not exist.

# `dump`

Return the full state of all runs known to the in-memory journal.

# `reset`

Wipe all journals. Test helper only.

# `start_link`

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*Consult [api-reference.md](api-reference.md) for complete listing*