Starts something lazy.
func ConnectDB(ctx context.Context) (*sql.DB, error) {
db, err := sql.Open("postgres", "postgres://...")
if err!= nil {
return nil, err
}
return db, nil
}
createDB := lazy.Me(ctx, ConnectDB, WithRetry(iters.Trim(iters.Repeat(time.Second), 5))
...
v, err := connectDB(ctx)