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AI Infrastructure
DNS for AI Systems: Why Agents Time Out First
How CoreDNS, the ndots:5 search-domain blowup, and the Linux conntrack race produce 5-second AI agent timeouts that masquerade as a slow model — and how to fix them.
AI Infrastructure
How an LLM API Request Actually Travels the Network
Trace an LLM call from fetch() to first token: DNS, TCP, TLS 1.3, HTTP/2 vs HTTP/3 (QUIC), and SSE streaming — and why TTFT, not transport, dominates.
AI Infrastructure
Load Balancing LLM Inference at Scale
Why round-robin and L4 load balancing fail for LLM traffic, how KV-cache-aware routing and the Gateway API Inference Extension cut TTFT, and who actually needs this.