NewFromConfig returns postgres-based *sqlx.DB instance from yaml config file given config file contents: db: primary: username: <username> password: "<password>" host: mydb.ap-southeast-1.rds.amazonaws.com port: 5432 schema: my_db_schema conn: max-idle: 20 max-lifetime: 10m timeout: 5m max-open: 100 keep-alive-interval: 30s then we can call using : v := viper.New() ..

NewPostgresDatabase - create & validate postgres connection given certain db.Option the caller have the responsibility to close the *sqlx.DB when succeed.