Computer Networks

A book-shaped table of contents for computer networking, from first principles to production systems: Ethernet through IP, TCP/UDP/QUIC, DNS, the HTTP ecosystem, security, cloud/Kubernetes networking, performance engineering, observability/debugging, and distributed-systems networking — cross-linking existing kubernetes/sre/system-design/tech notes instead of duplicating them.

1 — Virtual Networking

VPCs/VNets, subnets, route tables, and security groups as the building blocks of a cloud network.

2 — Kubernetes Networking

The Kubernetes networking model — pod network, CNI, kube-proxy, Services, Ingress, and the Gateway API.

3 — Service Mesh

Istio, Linkerd, and Envoy as service mesh implementations, and how sidecars and mTLS turn a mesh into a security and traffic-control layer.

5 — CDN

Edge nodes, cache invalidation, Cache-Control, and origin shield as the mechanics behind a CDN's performance and cost story.