DESCRIPTION: DDS_ResourceLimitsQosPolicy::max_samples_per_instance limits the maximum number of samples that can be cached for a single instance and must be less than or equal to max_samples and greater or equal to the history depth. When DDS_ResourceLimitsQosPolicy::max_samples_per_instance is higher than depth it makes it possible to loan samples and receive up to depth samples before returning loaned samples.

: When this resource-limit or DDS_HistoryQosPolicy::depth is exceeded and the DDS_HistoryQosPolicy::kind is DDS_KEEP_LAST_HISTORY_QOS, the oldest sample is removed from the cache.