region

type Manager interface {
	// GetRegionByKey gets region and leader peer by region key from cluster.
	GetRegionByKey(key []byte) (*Region, error)
	// GetRegionByID gets region and leader peer by region id from cluster.
	GetRegionByID(id uint64) (*Region, error)
	AddRegion(region *Region) error
	RemoveRegion(id uint64) error
}

type Region interface {

	// Put puts a key-value pair to region.
	Put(key []byte, value []byte) error
	// Get gets value by key from region.
	Get(key []byte) ([]byte, error)
	// Delete deletes a key-value pair from region.
	Delete(key []byte) error
	GetStartKey() []byte
	GetEndKey() []byte
	GetLeader() string
	GetPeers() []string
}