minco-sqlx-postgres 0.3.0

Bounded SQLx PostgreSQL pools and migrations for Minco local and serverless runtimes
Documentation 
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# minco-sqlx-postgres

Bounded SQLx PostgreSQL runtime support for Minco.

The serverless profile defaults to a small pool with zero minimum connections,
a bounded acquisition timeout, and an idle timeout. Runtime and migration
credentials should remain separate in deployed environments.

```rust,no_run
use minco_sqlx_postgres::{PostgresPoolConfig, connect};

# async fn open() -> Result<(), minco_sqlx_postgres::PostgresError> {
let config = PostgresPoolConfig::serverless("postgresql://localhost/app");
let pool = connect(&config).await?;
assert!(minco_sqlx_postgres::ready(&pool).await);
# Ok(()) }
```

Applications that compose independently versioned migration sets must give
each set its own history table:

```rust,no_run
# use minco_sqlx_postgres::PgPool;
# async fn migrate(pool: &PgPool) -> Result<(), minco_sqlx_postgres::PostgresError> {
minco_sqlx_postgres::migrate_with_history_table(
    pool,
    "migrations/orders",
    "_minco_orders_migrations",
)
.await?;
# Ok(()) }
```

The history-table name is restricted to a plain PostgreSQL identifier. Reusing
SQLx's default `_sqlx_migrations` table for unrelated migration directories
causes version/checksum collisions.