Multiple databases

Several databases

Give each pool its own type (type ReportsDB struct{ *sql.DB }) or a named token, so the container can tell them apart:

var ReadReplica = dygo.NewToken[*sql.DB]("db.replica")

dygo.Provide(OpenReplica, dygo.For(ReadReplica))

type Params struct {
    dygo.In
    Primary *DB
    Replica *sql.DB `name:"db.replica"`
}

Per-tenant databases

For a database per tenant, use a durable provider keyed by tenant. See “Durable providers” in the HTTP guide.