ThinkerQAQ

3.Network Services

Computer Networks · 2 notes

  1. 3.1 Content Delivery Networks (CDNs)historical

    How CDNs cache and serve content near users, use DNS/anycast steering, fill from origins, invalidate content, and trade freshness for latency and origin load.

  2. 3.2 DNShistorical

    DNS hierarchy, recursive resolvers, authoritative servers, A/AAAA/CNAME records, caching/TTL, DNS security, encrypted DNS, and traffic steering.