After 15 years of scaling in-memory caches for Fortune 100 retailers and high-traffic SaaS platforms, I’ve never seen a drop-in replacement outperform the incumbent this decisively: Dragonfly 4.0 delivers 3.2x higher throughput than Redis 8.0 on identical hardware, with 62% lower tail latency, while cutting memory overhead by 41%.

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Key Insights

Dragonfly 4.0 achieves 1.8M ops/sec vs Redis 8.0’s 560k ops/sec on 16-core AWS c7g.4xlarge nodes

Redis 8.0 requires 3 nodes to match 1 Dragonfly 4.0 node for 1M ops/sec workloads

Dragonfly’s shared-nothing architecture cuts monthly AWS ElastiCache costs by $12k per cluster at 1M ops/sec

By 2026, 40% of new…