Manatee 是一個基于ZooKeeper的系統能夠管理Postgres的備份和自動故障轉移，Manatee和Moray共同提供高可用的鍵值服務。

特性：

• Automated liveliness detection, failover, and recovery. Reads are always available, even during a failover. Writes are available as soon as the failover is complete.

• Automated bootstrap. New peers will bootstrap and join the shard without human intervention.

• Data integrity. Built atop ZFS andPostgreSQL synchronous replication for safe, reliable storage.

客戶端代碼：

var manatee = require('node-manatee');

var client = manatee.createClient({
   "path": "/manatee/1",
   "zk": {
       "connectTimeout": 2000,
       "servers": [{
           "host": "172.27.10.97",
           "port": 2181
       }, {
           "host": "172.27.10.90",
           "port": 2181
       }, {
           "host": "172.27.10.101",
           "port": 2181
       }],
       "timeout": 20000
   }
});
client.once('ready', function () {
    console.log('manatee client ready');
});

client.on('topology', function (urls) {
    console.log({urls: urls}, 'topology changed');
});

client.on('error', function (err) {
    console.error({err: err}, 'got client error');
});

項目主頁：http://www.baiduhome.net/lib/view/home/1415520972887