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Networking
How packets become pages.
- •150 XPThe Layered ModelLink → IP → TCP → TLS → HTTP.
- •175 XPDNSStub → recursive → authoritative.
- •200 XPTCPHandshake, reliability, slow start.
- •225 XPHTTP CachingCache-Control, ETag, stale-while-revalidate, CDNs.
- •200 XPTLS on the WireClientHello → Certificate → Finished — what bytes go across.
- •200 XPCDNs and AnycastPOPs, anycast, origin shields, and pull-vs-push.
- •200 XPLoad Balancer AnatomyL4 vs L7 internals — conntrack, hashing, slow start, DSR.
- •175 XPTraceroute and MTRHow traceroute works, and where it lies.
- •200 XPBGP BasicsAS numbers, prefixes, AS_PATH, and the outages BGP causes.