master-slave

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Master-slave solution for single-point service based on redis

Getting Started

Install it via npm:

``shell
npm install node-master-slave
`

And include in your project:

`javascript
import MasterSlaveClient from 'node-master-slave';
const client = new MasterSlaveClient(redis); // ioredis client

client.on("change", function(c) {
console.log('isMaster: ', c.isMaster());
console.log('isAlive: ', c.isAlive());
if (c.isMaster()) {
setTimeout(function() {
c.broadcastMessage('test message');
c.changeToSlave();
}, Math.random() * 3000 + 2000)
}
});

client.on("message", function(message) {
console.log(message);
})

client.connect();
`

Api

$3

构造函数

redisConnection: redis 连接, 推荐使用 ioredis

beatInterval: 心跳检测最大频率 (单位 ms)

expire: 心跳过期时间 (单位 s)

channel: master slave 集合标识

$3

是否是 master

$3

是否是 slave

$3

创建客户端连接

$3

断开客户端连接

$3

master 切换为 slave

$3

客户端 id

$3

客户端是否已连接

$3

master slave 集合广播消息

$3

监听 change 事件, 当 master 和 slave 状态切换时触发回调

$3

监听 message 事件, 收到 broadcastMessage` 广播的消息后触发

License

MIT