engine

func (*DB) Close ¶

func (db *DB) Close() error

Close the db instance

func (*DB) Delete ¶

func (db *DB) Delete(key []byte) error

func (*DB) Fold ¶

func (db *DB) Fold(f func(key []byte, value []byte) bool) error

Fold Get all the data and perform the operation specified by the user. The function returns false to exit

func (*DB) Get ¶

func (db *DB) Get(key []byte) ([]byte, error)

Get Read data according to the key

func (*DB) GetListKeys ¶

func (db *DB) GetListKeys() [][]byte

GetListKeys Gets all the keys in the database

func (*DB) Merge ¶

func (db *DB) Merge() error

Merge 清理无效数据，生成 hint 索引文件

func (*DB) NewIterator ¶

func (db *DB) NewIterator(opt config.IteratorOptions) *Iterator

NewIterator 初始化迭代器

func (*DB) NewWriteBatch ¶

func (db *DB) NewWriteBatch(opt config.WriteBatchOptions) *WriteBatch

NewWriteBatch Init WriteBatch

func (*DB) Put ¶

func (db *DB) Put(key []byte, value []byte) error

Put write a key-value pair to db, and the key must be not empty

func (*DB) Sync ¶

func (db *DB) Sync() error

Sync the db instance

func (*Iterator) Close ¶

func (it *Iterator) Close()

func (*Iterator) Key ¶

func (it *Iterator) Key() []byte

func (*Iterator) Next ¶

func (it *Iterator) Next()

func (*Iterator) Rewind ¶

func (it *Iterator) Rewind()

func (*Iterator) Seek ¶

func (it *Iterator) Seek(key []byte)

func (*Iterator) Valid ¶

func (it *Iterator) Valid() bool

func (*Iterator) Value ¶

func (it *Iterator) Value() ([]byte, error)

func (*WriteBatch) Commit ¶

func (wb *WriteBatch) Commit() error

Commit The transaction commits, writes the transient data to the data file, and updates the in-memory index

func (*WriteBatch) Delete ¶

func (wb *WriteBatch) Delete(key []byte) error

Delete Batch deletion of data

func (*WriteBatch) Put ¶

func (wb *WriteBatch) Put(key []byte, value []byte) error

Put Data batch write