• Provide basic get, set, delete, and scan operations √
• The data saved in one node must be persistent in the disk (restart can't lose data)
• Need to show - Kill minority node, the service can still work √
• Need to show - Kill majority node, the service can't work √
• Need to support add/remove node dynamically
• [Plus Point] Use a benchmark tool to find some performance problems.

• WAL Method

  Apply log的时候先写日志，再定时刷盘

• Follower Read

  Client get从Follower读取数据

• git checkout v2
• cargo run --manifest-path Cargo.toml --bin server
• cargo run --manifest-path Cargo.toml --bin client

One Server with three raft backend. TODO: each raft backend has it's own server

one server per raft backend. TODO: persist raft node's data