protected RedisConnection preProcessConnection(RedisConnection connection, boolean existingConnection) {
		return new DefaultStringRedisConnection(connection);
	}
Constructs a new <code>StringRedisTemplate</code> instance with a set of retry operations.

{@link #afterPropertiesSet()} still need to be called if creating outside a spring managed context

@param connectionFactory connection factory for creating new connections
spring-xd-analytics/src/main/java/org/springframework/xd/analytics/metrics/redis/StringRedisRetryTemplate.java