repository

type Book struct {
	ID        int64     `json:"id"`
	Title     string    `json:"title" validate:"required"`
	Author    string    `json:"author" validate:"required"`
	UpdatedAt time.Time `json:"-"`
	CreatedAt time.Time `json:"-"`
}

type BookRepo interface {
	Find(ctx context.Context, id int64) (*Book, error)
	List(ctx context.Context) ([]*Book, error)
	Insert(ctx context.Context, book Book) (lastInsertID int64, err error)
	Delete(ctx context.Context, id int64) error
	Update(ctx context.Context, book Book) error
}

type BookRepoImpl struct {
	dig.In
	*sql.DB
}

type CachedBookRepoImpl struct {
	dig.In
	BookRepoImpl
	Redis *redis.Client
}