# `Nous.Decisions.Store.ETS`
[🔗](https://github.com/nyo16/nous/blob/v0.17.1/lib/nous/decisions/store/ets.ex#L1)

ETS-backed decision graph store.

Uses two unnamed ETS tables (one for nodes, one for edges) so multiple
instances can coexist. Graph queries use in-memory BFS traversal.

## Ownership & lifetime

Like `Nous.KnowledgeBase.Store.ETS`, this store is **intentionally
run-scoped**: `init/1` hands the table references back in `state`, the caller
threads them through `ctx` for the session, and the tables are reclaimed when
the owning process exits. There is no supervised owner and no cross-run
persistence — that is the design, not a leak. The tables are `:public` so the
several processes that share a session's `state` (agent loop + tool tasks) can
all write; access is gated by possession of the table reference, which stays
inside `ctx`. Reach for a serializing owner process if you need cross-write
atomicity or a lifetime longer than the session.

## Quick Start

    {:ok, state} = Nous.Decisions.Store.ETS.init([])
    node = Nous.Decisions.Node.new(%{type: :goal, label: "Ship v1.0"})
    {:ok, state} = Nous.Decisions.Store.ETS.add_node(state, node)

# `init`

```elixir
@spec init(keyword()) :: {:ok, map()}
```

Create two ETS tables for nodes and edges.

## Options

None currently supported.

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