caching and domain

Caching and domain management accelerate web performance by storing DNS records and site assets closer to the end user.

Modern web infrastructure relies on the synergy between DNS resolution and strategic caching layers. By configuring Time to Live (TTL) values on domain records, operators control how long recursive resolvers store IP mappings (reducing lookup latency from 120ms to near zero). Beyond the handshake, Content Delivery Networks (CDNs) like Cloudflare or Akamai cache static assets at the edge (using the domain as a primary key) to serve content without hitting the origin server. This setup minimizes bandwidth costs, protects against traffic spikes, and ensures a sub-two-second load time for global users.

https://www.cloudflare.com/learning/cdn/glossary/what-is-caching/