@Override
	public Object recover(RetryContext context) throws Exception {
		logger.error("Failed to perform redis operation.", context.getLastThrowable());
		return null;
	}
A callback that logs information about the failure to execute the redis operation after retries have
been exhausted

@author Mark Pollack
spring-xd-analytics/src/main/java/org/springframework/xd/analytics/metrics/redis/LoggingRecoveryCallback.java