Redis connection implementing Spring Boot and Lettuce on AWS
I'm trying to configure Hey everyone, I'm running into an issue that's driving me crazy... I'm working with intermittent `RedisConnectionException` errors when using Spring Boot with the Lettuce Redis client on AWS. My application runs in a containerized environment with ECS, and the Redis instance is hosted in ElastiCache. The behavior logs show `Unable to connect to Redis at [hostname]:6379` during heavy load on the application. I've confirmed that the connection details are correct and that the ElastiCache security group allows inbound traffic from my ECS tasks. Here's the configuration in my `application.yml`: ```yaml spring: redis: host: [hostname] port: 6379 timeout: 2000 ``` I’ve also tried increasing the timeout to 5000 ms, but the issues continue. To troubleshoot, I implemented a retry mechanism in my code as follows: ```java import io.lettuce.core.RedisClient; import io.lettuce.core.api.StatefulRedisConnection; import io.lettuce.core.api.sync.RedisCommands; public class RedisService { private final RedisClient redisClient; private final StatefulRedisConnection<String, String> connection; public RedisService() { this.redisClient = RedisClient.create("redis://[hostname]:6379"); this.connection = redisClient.connect(); } public String getValue(String key) { RedisCommands<String, String> commands = connection.sync(); try { return commands.get(key); } catch (RedisConnectionException e) { // Log and handle retry } return null; } } ``` Despite these efforts, sometimes the connection still fails. I suspect it might be related to connection pooling or resource limits. How can I optimize my Redis configuration in Spring Boot to handle higher loads without running into connection issues? Are there specific settings or best practices I should consider for using Lettuce with AWS ElastiCache? Has anyone else encountered this? What would be the recommended way to handle this?