---
id: version-2.5.0-io-redis-sink
title: Redis sink connector
sidebar_label: Redis sink connector
original_id: io-redis-sink
---

The  Redis sink connector pulls messages from Pulsar topics 
and persists the messages to a Redis database.



## Configuration

The configuration of the Redis sink connector has the following properties.



### Property

| Name | Type|Required | Default | Description 
|------|----------|----------|---------|-------------|
| `redisHosts` |String|true|" " (empty string) | A comma-separated list of Redis hosts to connect to. |
| `redisPassword` |String|false|" " (empty string) | The password used to connect to Redis. |
| `redisDatabase` | int|true|0  | The Redis database to connect to. |
| `clientMode` |String| false|Standalone | The client mode when interacting with Redis cluster. <br><br>Below are the available options: <br><li>Standalone<br><li>Cluster |
| `autoReconnect` | boolean|false|true | Whether the Redis client automatically reconnect or not. |
| `requestQueue` | int|false|2147483647 | The maximum number of queued requests to Redis. |
| `tcpNoDelay` |boolean| false| false | Whether to enable TCP with no delay or not. |
| `keepAlive` | boolean|false | false |Whether to enable a keepalive to Redis or not. |
| `connectTimeout` |long| false|10000 | The time to wait before timing out when connecting in milliseconds. |
| `operationTimeout` | long|false|10000 | The time before an operation is marked as timed out in milliseconds . |
| `batchTimeMs` | int|false|1000 | The Redis operation time in milliseconds. |
| `batchSize` | int|false|200 | The batch size of writing to Redis database. |


### Example

Before using the Redis sink connector, you need to create a configuration file through one of the following methods.

* JSON

    ```json
    {
        "redisHosts": "localhost:6379",
        "redisPassword": "fake@123",
        "redisDatabase": "1",
        "clientMode": "Standalone",
        "operationTimeout": "2000",
        "batchSize": "100",
        "batchTimeMs": "1000",
        "connectTimeout": "3000"
    }
    ```

* YAML

    ```yaml
    {
        redisHosts: "localhost:6379"
        redisPassword: "fake@123"
        redisDatabase: 1
        clientMode: "Standalone"
        operationTimeout: 2000
        batchSize: 100
        batchTimeMs: 1000
        connectTimeout: 3000
    }
    ```

