Create filesystem based storage for performance.

[k82cn]

Motivation

Currently, Flame is using SQLite for the storage. But the performance of SQLite is not good enough for multi-thread read/write, including frontend/backend/scheduling.

As Flame has specific data struct, we'd like to build a file system based storage for better performance.

Function Specification

Build a high throughput storage for Flame.

Solutions

FS is required for that.

Additional context

N/A