Eviction Storm Indicating Memory Exhaustion

Monitor memcached_evictions metric for sustained increases. Cross-reference with memcached_operation_hit_ratio dropping and memcached_size approaching memcached_backend limits. Evictions combined with declining hit ratio indicate memory pressure forcing removal of still-useful data.

Scale up memory allocation immediately. Review cache key distribution using prefix analysis to identify heavy consumers. Consider implementing TTL optimization for less-critical data or adding cache nodes to distribute load.