## Redis

### Sentinel

| name                   | address   | port | password    |
| ---------------------- | --------- | ---- | ----------- |
| master                 | localhost | 6380 | my_password |
| slave1                 | localhost | 6480 | my_password |
| slave2                 | localhost | 6481 | my_password |
| sentinel1 (`mymaster`) | localhost | 7380 | sentinel    |
| sentinel2 (`mymaster`) | localhost | 7381 | sentinel    |

> INFO: Read more about ioredis sentinel [here](https://github.com/luin/ioredis#sentinel).

> HINT: When using Sentinel in Master-Slave setup, if you want to set the passwords for Master and Slave nodes, consider having the same password for them ([#7292](https://github.com/redis/redis/issues/7292)).

```ts
// app.module.ts
import { Module } from '@nestjs/common';
import { RedisModule } from '@liaoliaots/nestjs-redis';

@Module({
  imports: [
    RedisModule.forRoot({
      readyLog: true,
      commonOptions: {
        name: 'mymaster',
        sentinels: [
          {
            host: 'localhost',
            port: 7380
          },
          {
            host: 'localhost',
            port: 7381
          }
        ],
        sentinelPassword: 'sentinel',
        password: 'my_password'
      },
      config: [
        {
          // get master node from the sentinel group
          role: 'master',
          namespace: "I'm master"
        },
        {
          // get a random slave node from the sentinel group
          role: 'slave',
          namespace: "I'm slave"
        }
      ]
    })
  ]
})
export class AppModule {}
```