# Valkey (Linux Foundation) vs Dragonfly (C++ Shared-Nothing): 2026 Empirical Benchmark & Cost Shootout

> **Direct Answer (October 2026 Verdict)**: Valkey wins on 100% permissive BSD-3-Clause open-source governance (backed by Linux Foundation, AWS, Google Cloud, and Oracle) and 1:1 drop-in Redis Cluster/Sentinel wire compatibility across 27.5k+ GitHub stars (98.2), while Dragonfly wins on vertical multi-core C++ throughput (4.2M ops/sec on a single node via shared-nothing fibers and `io_uring`), 40% lower Dashtable memory footprint, and zero-overhead forkless snapshots across 31.8k+ GitHub stars (98.1).

- **Category**: Linux Foundation BSD-3-Clause Redis Drop-In Fork vs Shared-Nothing Multi-Threaded C++ In-Memory Store Shootout
- **Canonical URL**: https://exactbaseline.com/vs/valkey-vs-dragonfly
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## Valkey (Linux Foundation) Key Advantages
- 27,453+ GitHub stars under a 100% permissive BSD-3-Clause license stewarded by the Linux Foundation after Redis switched to RSALv2/SSPLv1
- Zero-risk drop-in replacement for Redis 7.2+ with enhanced multi-threaded asynchronous network I/O reaching 1.1M+ RPS per node
- First-class managed cloud support across AWS ElastiCache for Valkey, Google Cloud Memorystore for Valkey, and Aiven

## Dragonfly (C++ Shared-Nothing) Key Advantages
- 31,794+ GitHub stars in C++20 using a shared-nothing, thread-per-core fiber architecture (`io_uring`) that scales linearly to 4.2M+ ops/sec on a single VM
- Dashtable compact hash indexing reduces in-memory footprint by 30-40% compared to legacy Redis dictionaries and eliminates `BGSAVE` `fork()` memory-doubling OOM spikes
- Cuts $4,400/mo commercial Redis Enterprise Cloud bills (at 256GB HA) down to $360/mo on self-hosted cloud/bare-metal instances (-91.8%)