zoo.cfg文件：
| 属性 | 默认值 | 官方介绍 | 详解 |
| tickTime | 2000 | the number of milliseconds of each tick | 工作时间单元，以毫秒为单位，用来控制心跳和超时。默认情况下，一次会话的最小的超时时间是tickTime的两倍。 |
| initLimit | 10 | the number of ticks that the initial synchronization phase can take |
默认，初始同步阶段花费10个工作时间单元 |
| syncLimit | 5 | the number of ticks that can pass between sending a request and getting an acknowledgement | 发送一次请求和得到一次确认需要花费5个工作时间单元 |
| dataDir | the directory where the snapshot is stored | 内存数据库快照被存储的目录 | |
| dataLogDir | 事务日志被存储的目录 | ||
| clientPort | 2181 | the port at which the clients will connect | client 连接的端口 |
| maxClientCnxns | 60 | the maximum number of client connections | 客户端连接的最大数量 |
| autopurge.snapRetainCount | 3 | the number of snapshots to retain in dataDir | 在dataDir中保留的快照数量 |
| autopurge.purgeInterval | 1 | purge task interval in hours | 清理任务每小时执行的次数 |