If you've ever managed a DNS server at scale (like for an ISP or a large corporate network), you know that standard configurations don't cut it. You have to dive deep into kernel TCP/UDP buffers, slab sizes, and thread allocations.
I got tired of doing this manually, so I built an open-source appliance called Sentinel DNS to solve it.
The Problem
When you run unbound, the default settings are meant for a small office. If you throw 10,000 queries per second (QPS) at it, it chokes. You drop packets, latency spikes, and users complain.
The Solution: Dynamic Auto-Tuning
