@Override
	public Iterable<M> findAll(Iterable<String> keys) {
		List<M> results = new ArrayList<M>();

		for (String k : keys) {
			M value = findOne(k);
			if (value != null) {
				results.add(value);
			}
		}
		return results;
	}
Provides the key for a named metric. By default this appends the name to the metricPrefix value.

@param metricName the name of the metric
@return the redis key under which the metric is stored
spring-xd-analytics/src/main/java/org/springframework/xd/analytics/metrics/redis/AbstractRedisMetricRepository.java