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consistent_hash's Introduction

一致性哈希环,实现数据的插入、删除、打印,没有实现的功能是查找、范围查找,目前插入数据为int型.
节点之间采用gossip维护集群状态

网络库采用libevent,需要提前安装libevent库,Ubuntu下安装步骤:
1. 安装autoconf,sudo apt-get install autoconf
2. 下载libevent源码编译,http://libevent.org/,https://github.com/nmathewson/Libevent
3. 编译步骤:
 $ ./configure
 $ make
 $ make verify   # (optional)
 $ sudo make install

哈希函数采用openssl的md5,Ubuntu安装ssl库:sudo apt-get install libssl-dev

链接时需要指明链接的库:-levent -lcrypto

bug list:
1. 数据有时测试已经发送,但是没有被接收,不知是否网络原因
2. 数据发送前没有判断节点是否offline
3. 实测环境下,host_state_s的status,version,generation传输之后都是0,说明可能没有真正内存拷贝成功

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