RAID(Redundant Array of Independent Disks) 备份磁盘，用于防止一个磁盘挂了而导致的数据丢失
TiKV can be seen one huge Map where Key and Value are the original Byte array.
And In the huge Map, the key-value paires are ordered according to the Key's binary sequence.
TiKV is based on the standalone KV storage engine - RocksDB, and uses RAFT to replicate data to
multiple machines in case of machine failure.
For a KV storage, there are two typical solutions to distribute data among multiple machines:
- Create
Hashand selectregion/nodeaccording to the Hash value - Use
Rangeand store a segmentof serial Key in a storage node