contract

type Backend interface {
	Get(key string) ([]byte, bool, error)

	Set(key string, payload []byte, ttl time.Duration) error

	Delete(key string) error

	Has(key string) (bool, error)

	Clear() error

	Many(keys []string) (map[string][]byte, error)

	SetMultiple(items map[string][]byte, ttl time.Duration) error

	DeleteMultiple(keys []string) error

	Increment(key string, delta int64) (int64, error)

	Decrement(key string, delta int64) (int64, error)

	Close() error
}

type Cache interface {
	Get(key string) (any, bool, error)

	Set(key string, value any, ttl time.Duration) error

	Delete(key string) error

	Has(key string) (bool, error)

	Clear() error

	Many(keys []string) (map[string]any, error)

	SetMultiple(items map[string]any, ttl time.Duration) error

	DeleteMultiple(keys []string) error

	Increment(key string, delta int64) (int64, error)

	Decrement(key string, delta int64) (int64, error)

	Close() error
}

type Serializer interface {
	Serialize(value any) ([]byte, error)

	Deserialize(payload []byte) (any, error)
}