Module store 

Storage backend abstraction for the audit log.

Two backends ship in the box:

• SqliteStore — rusqlite-backed, single-file local database. The default for dev/test; explicitly not recommended for production because the audit log dies with the host (no off-box durability, nothing to forward to a SOC).
• PostgresStore — sqlx-backed, native async, TLS via rustls + webpki-roots. Wire-compatible with AWS RDS / Aurora, GCP Cloud SQL + AlloyDB, Azure Database for PostgreSQL Flexible Server, Supabase, Neon, and self-hosted PostgreSQL.

The dispatcher does not know which backend is active. It calls into AuditStore (an async trait) and the runtime resolves to the configured impl through state.audit: Arc<dyn AuditStore + Send + Sync>.

Cloud provider quick reference

See docs/storage-cloud.md for the full table. Summary:

Provider	URL hint	TLS mode	Statement cache
AWS RDS / Aurora	*.rds.amazonaws.com:5432	verify-full	default
GCP Cloud SQL	via Cloud SQL Auth Proxy on 127.0.0.1	disable	default
Azure Flexible	*.postgres.database.azure.com:5432	verify-full	default
Supabase (5432)	db.<ref>.supabase.co:5432	require	default
Supabase (pooler)	*.pooler.supabase.com:6543	require	0
Neon	ep-*.neon.tech	require	default
Self-hosted	(operator chooses)	as needed	default

Re-exports

pub use postgres::PostgresStore;

Modules

postgres

Postgres backend for the audit log.

Structs

SqliteStore

Adapter that exposes the existing rusqlite-backed TransactionStore through the async AuditStore trait. Each method runs the underlying blocking work on tokio::task::spawn_blocking so the executor stays responsive even when the SQLite write takes a millisecond on a slow disk.

Traits

AuditStore

Async, polymorphic interface to the audit log. Implemented by SqliteStore (rusqlite, blocking under the hood) and postgres::PostgresStore (sqlx, native async).