Amazon ElastiCache now supports Graviton4-based M8g, R8g, and C8gn node families for both Valkey and Memcached engines. These new instances deliver up to 47% higher throughput and 43% lower P99 latency compared to Graviton3 equivalents, with up to 31% better price-performance. The M8g family specifically offers 20% more memory at the same node size, while C8gn nodes provide up to 200 Gbps of network bandwidth for network-intensive workloads.
- Graviton4 nodes boost throughput by 47% and cut P99 latency by 43% over Graviton3.
- M8g nodes provide 20% more memory at identical sizes (e.g., 124 GiB vs 103 GiB).
- C8gn nodes offer 200 Gbps bandwidth, optimizing cost for network-heavy loads.
- Support spans both Valkey and Memcached engines for immediate compatibility.