[SOLVED] Accessing in-transit encryption enabled Elasticache with Spring Redis, throws an error for the stringRedisTemplate.keys method

Accessing in-transit encryption enabled Elasticache with Spring Redis, throws an error for the stringRedisTemplate.keys method

We have an in-transit encryption enabled AWS Elasticache instance. We're trying to access the instance from our Spring boot microservice with Spring data redis SSL enabled.

LettuceClientConfiguration clientConfig = LettuceClientConfiguration.builder()
                .useSsl().and()
                .shutdownTimeout(Duration.ZERO)
                .build();
return new LettuceConnectionFactory(new RedisStandaloneConfiguration(redisHost, redisPort), clientConfig);

But enabling SSL gives an error, for the method StringRedisTemplate.keys()

io.lettuce.core.RedisCommandExecutionException: ERR unknown command 'keys', with args beginning with: IndexKey:abc_prefix*

Can this be due to some restriction with the method StringRedisTemplate.keys(), with enabling SSL. This method works fine when SSL is diabled.

Solution

Spring boot RedisTemplate, keys method has the annotation @SuppressWarnings("unchecked")

@SuppressWarnings("unchecked")
public Set<K> keys(K pattern) {}

When I replace the keys method with Scan, the issue got resolved.

I think the issue was the security risks with using the keys method.