DNS for Engineers
How TTLs really affect changes, why propagation feels slow, where DNS failover helps and where it doesn’t, plus cutover playbooks that keep rollback easy.
devdnsnetworking
Posts tagged “networking”
Tiny explainers grouped by topic. Spend less time Googling, more time building.
Reverse Proxy vs API Gateway vs Load Balancer
Three edge layers, three different jobs: one shapes HTTP traffic, one spreads load, one enforces API policy. Here’s where each belongs.
devdevopsapi
Timeouts, Retries, and Backoff — the practical playbook
Design request deadlines, hop timeouts, and idempotent retries with jitter so you protect upstreams, tame tail latency, and avoid cascading failures.
devreliabilityresilience
Demystifying DNS Propagation — why changes aren’t instant
DNS changes feel slow because of caching everywhere: resolvers, browsers, OSes, CDNs, and parent zones. Here’s the mental model, typical timelines, and how to plan zero‑drama cutovers.
devdnsnetworking
What Happens When You Type a URL in a Browser — the tiny explainer
From DNS lookup to TLS to paint: the shortest useful tour of what the browser actually does after you hit Enter.
devwebnetworking