raft-kv

这是一个基于 raft 共识算法的 etcd 数据库，它基于 redis 实现了一种 k-v 存储方式，数据通信使用 asio 框架

如何运行

Build

git clone https://github.com/XuDaHaoRen/raft_kv.git
mkdir -p raft-kv/build
cd raft-kv/build
cmake .. -DCMAKE_BUILD_TYPE=Release
make -j8

运行集群

首先安装 goreman, 它可以实现对进程，然后执行下面的指令

goreman start

测试

install redis-cli, a redis console client.

redis-cli -p 63791
127.0.0.1:63791> set mykey myvalue
OK
127.0.0.1:63791> get mykey
"myvalue"

先将 node 2 暂停，并且对 key 值进行更新：

goreman run stop node2
redis-cli -p 63791
127.0.0.1:63791> set mykey new-value
OK

重新将 node 2 启动并查看更新后的值

redis-cli -p 63792
127.0.0.1:63792> KEYS *
1) "mykey"
127.0.0.1:63792> get mykey
"new-value"

benchmark

redis-benchmark -t set,get -n 100000 -p 63791

====== SET ======
  100000 requests completed in 1.35 seconds
  50 parallel clients
  3 bytes payload
  keep alive: 1

96.64% <= 1 milliseconds
99.15% <= 2 milliseconds
99.90% <= 3 milliseconds
100.00% <= 3 milliseconds
73909.83 requests per second

====== GET ======
  100000 requests completed in 0.95 seconds
  50 parallel clients
  3 bytes payload
  keep alive: 1

99.95% <= 4 milliseconds
100.00% <= 4 milliseconds
105485.23 requests per second