storage

type Record struct {
	Type    string
	Key     string
	Value   []byte
	ExpTime int64
}

type Store interface {
	//Reads value from storage by specified key
	Read(rec Record) (value []byte, err error)
	//Writes specified pair key value to storage.
	//expTime value sets TTL for Redis storage.
	//expTime set Metadata Expires value for S3Storage
	Write(rec Record) error
	// IsExists checkes whether specified by key record exists
	IsExists(rec Record) bool
	//Is key expired ? It checks if parse results storage item is expired. Set up  Expiration as "ITEM_EXPIRE_IN" environment variable.
	//html pages cache stores this info in sResponse.Expires . It is not used for fetch endpoint.
	Expired(rec Record) bool
	//Delete deletes specified item from the store
	Delete(rec Record) error
	//DeleteAll erases all items from the store
	DeleteAll() error
	// Close storage connection
	Close()
}