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%. 📡 Hacker News Top Stories Right Now NetHack 5.0.0 (133 points) Videolan Dav2d (60 points) Uber wants to turn its drivers into a sensor grid for self-driving companies (78 points) Inventions for battery reuse and recycling increase more than 7-fold in last 10y (64 points) California to begin ticketing driverless cars that violate traffic laws (61 points) 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 in-memory…