Question: Does Redis Lettuce Client Connect to ElastiCache?


Yes, the Redis Lettuce client can connect to an Amazon ElastiCache cluster. The Lettuce client is a Java-based library and it supports advanced features like SSL/TLS encryption, which is required for connecting to certain ElastiCache configurations.

To connect to an ElastiCache instance using the Lettuce client, follow these steps:

  1. First, add the Lettuce dependency to your pom.xml file (if using Maven):
<dependency> <groupId>io.lettuce.core</groupId> <artifactId>lettuce-core</artifactId> <version>6.1.5.RELEASE</version> <!-- Check for the latest version --> </dependency>
  1. Next, in your Java code, create a Redis client with the necessary configuration options:
import io.lettuce.core.RedisClient; import io.lettuce.core.RedisURI; import io.lettuce.core.api.StatefulRedisConnection; import io.lettuce.core.api.sync.RedisCommands; public class LettuceElastiCache { public static void main(String[] args) { // Replace with your ElastiCache endpoint and port String host = "<your-elasticache-endpoint>"; int port = 6379; // or your custom port RedisURI uri = RedisURI.Builder.redis(host, port) .withSsl(true) // Enable SSL if needed .withVerifyPeer(false) // Disable peer verification if required .build(); RedisClient client = RedisClient.create(uri); StatefulRedisConnection<String, String> connection = client.connect(); RedisCommands<String, String> commands = connection.sync(); // Test the connection commands.set("hello", "world"); String value = commands.get("hello"); System.out.println("Value: " + value); connection.close(); client.shutdown(); } }

Replace <your-elasticache-endpoint> with your ElastiCache instance's endpoint and update the port if necessary.

Remember to enable SSL/TLS encryption and disable peer verification only if it's required by your ElastiCache configuration.

Was this content helpful?

White Paper

Free System Design on AWS E-Book

Download this early release of O'Reilly's latest cloud infrastructure e-book: System Design on AWS.

Free System Design on AWS E-Book
Start building today

Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.