A single-threaded, persistent key/value store server and client with synchronous networking over a custom protocol.

• log crate & slog crate
• kvs-client: lib + main : The kvs-client binary accepts the same command line arguments as in previous projects.
• kvs-server: 重写参数解析器 : kvs-server has its own set of command line arguments to handle, as described previously in the spec.
  • kvsEngine tarit
• protocol: pending design - 命令传输
  • part 3 Client-server networking
  • part 4 Implement command across the network
• 日志打印
• 可扩展存储引擎 KvsEngine, SledKvsEngine
• benchmark 性能测试

https://github.com/pingcap/talent-plan/blob/master/courses/rust/projects/project-3/README.md#user-content-project-setup

• KvsClient - implements the functionality required for kvs-client to speak to kvs-server
• KvsServer - implements the functionality to serve responses to kvs-client from kvs-server
• KvsEngine trait - defines the storage interface called by KvsServer
• KvStore - implements by hand the `KvsEngine trait
• SledKvsEngine - implements KvsEngine for the sled storage engine.

pub trait KvsEngine {
  KvsEngine::set(&mut self, key: String, value: String) -> Result<()>;
  KvsEngine::get(&mut self, key: String) -> Result<Option<String>>;
  KvsEngine::remove(&mut self, key: String) -> Result<()>;
}