In Q3 2024, a single 16-core node running MongoDB 8 handled 1.2M writes/sec for 1KB IoT payloads, while Cassandra 5 topped out at 980K writes/sec under identical hardware. But raw throughput is only half the story for IoT fleets scaling to 100M+ devices. 📡 Hacker News Top Stories Right Now Ghostty is leaving GitHub (2175 points) Bugs Rust won't catch (124 points) Before GitHub (368 points) How ChatGPT serves ads (249 points) Show HN: Auto-Architecture: Karpathy's Loop, pointed at a CPU (77 points) Key Insights MongoDB 8 delivers 22% higher peak write throughput than Cassandra 5 for 1KB IoT payloads on identical bare-metal hardware Cassandra 5 offers 40% lower 99th percentile write latency when configured with Leveled Compaction Strategy (LCS) for time-series data MongoDB 8’s serverless instance costs $0.08 per million writes vs Cassandra 5 on EC2 (i4i.4xlarge) at $0.12 per million for 10M+ daily writes By 2026, 65% of IoT workloads will adopt tunable consistency models, favoring Cassandra’s tunable QUORUM…