5 articles tagged with DNS.
\"It's always DNS\" is a joke because the failure modes are so scattered: resolver config, caching, search domains, split DNS. Here is where to actually look.
A developer-friendly walk through DNS resolution, record types, TTL, and the caching quirks that cause real production bugs.
You don't need a CCNA to ship reliable services, but you do need the core ideas. This is the map: DNS, TCP, TLS, proxies, and CDNs, minus the jargon.
A pod can't reach a service by name, the app throws connection errors, and everyone blames the network. Usually it's DNS, and usually it's fixable.
A request leaving a laptop somehow lands on a server 20ms away. Here is what actually decides which point of presence answers.
