ioredis: Unhandled error event: Error: getaddrinfo ENOTFOUND - AWS ElasticCache

Try setting family: 6; for some reason ioredis defaults to family: 4 and AWS may be using (only) IPv6. Note I had the same issue on fly.io.

For anyone who may concern, you can also append the family=6 option to the redis URL (if you can’t add family:6). For example, it should changeredis://domain:6379 to redis://domain:6379/?family=6.

Nothing helps 😦

Any update here ? I am stuck in the same problem

thanks @richiejp ! In my case fly io was also working only with family: 6.

@richiejp thank you!!! This helped me out 😄

Just FYI, this works for me if I use add those options.

const pubRedisClient = new Redis(
	parseRedisCredentials(process.env.REDIS_CONNECTION ?? 'redis://localhost:6379', {
		lazyConnect: true,
		connectTimeout: 15000,
		retryStrategy: (times) => Math.min(times * 30, 1000),
		reconnectOnError(error) {
			const targetErrors = [/READONLY/, /ETIMEDOUT/];
			logger.warn(`Redis connection error: ${error.message}`, error);
			return targetErrors.some((targetError) => targetError.test(error.message));
		},
	}),
);