Insight for: Show HN: Ray Hosting – Topology-aware game server orchestrator made from scratch

Ray Hosting, a topology-aware game server orchestrator built from scratch.

Analyzed: Jun 15, 2026

Ray Hosting addresses critical performance and security challenges for game server operators. Its deep-level CPU optimization, including core pinning and cache alignment, directly tackles L3 cache thrashing and ensures maximum single-core efficiency, paramount for real-time gaming. The sophisticated eBPF/XDP and nftables-based DDoS mitigation, with dynamic blacklisting and configurable profiles, provides robust protection against common attack vectors. Furthermore, network traffic prioritization and TCP BBR implementation optimize player experience by minimizing latency and rubber-banding. This orchestrator offers a highly specialized, performance-centric solution for game hosting providers, differentiating itself through granular control over system resources and advanced network security, directly impacting player retention and operational stability.

game server orchestrator topology-aware CORE PINNING CCD CACHE ALIGNMENT CPU cache layouts game containers docker run core complex dies (CCDs) SMT sibling threads L3 cache thrashing single-core tick efficiency GRUB 1000Hz timer interrupts context switching rcu offload isolcpus nohz_full rcu_nocbs Zen 4 core complex die (CCD) mapping memory limit memory reservation kernel lock RAM block swap usage noisy-neighbour problem docker update --cpuset-cpus EBPF/XDP NFTABLES ddos attacks UFW per port connection rate limits blacklist eBPF map AnonymousPipeClientStream cloudflare-style profiles rmem_max/wmem_max buffers player ticks fireqos prioritize game traffic TCP BBR Congestion Control Linux CUBIC rubber-banding

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Show HN: Ray Hosting – Topology-aware game server orchestrator made from scratch

Score: 3