# alkstore-postgres

The Postgres engine of the [alkstore](https://git.alk.dev/alkdev/alkstore/blob/main/README.md)
family: the core contract implemented on tokio-postgres +
deadpool-postgres, natively async (no blocking bridge, no
`spawn_blocking` seam), with a hand-rolled LISTEN forwarder.

```rust
let store = alkstore_postgres::open(&dsn, alkstore_postgres::PgOpts::default()).await?;
```

**Engine posture — multi-host native.** Connections are per-process
state; nothing assumes a shared host. Connection budget: `max_size`
pooled connections **+ 1 non-pooled listener connection per LISTEN-ing
process** (pooled connections cannot carry LISTEN) — size the server
for the sum. v1 TLS is effectively unavailable: the engine hardwires
`NoTls` on every connection path, so network confidentiality must come
from the deployment topology. Queue/stream/lock/schedule tables live
in one engine-owned PostgreSQL schema (default `alkstore`,
per-engine option).

See the [family README](https://git.alk.dev/alkdev/alkstore/blob/main/README.md)
for the interface and the deployment matrix, and the
[Postgres engine spec](https://git.alk.dev/alkdev/alkstore/blob/main/docs/architecture/engine-postgres.md)
for the driver's details.