Blob

Questions:

1. PinnableSlice 这个作用是啥
2. rocksdb的blob和pingcap的titan之间关系？实现逻辑？
3. Blob文件是怎么选择的

Blob将key和value分来开存储。

// A wrapped database which puts values of KV pairs in a separate log
// and store location to the log in the underlying DB.

Blob Log

blob log format

blob index

Open

Blob open

Put

BlobPut

Get

BlobGet