Tag: #networking

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• Apache APISIX Ingress Controller — A Deep Dive into etcd-Based Dynamic Routing

  A deep dive into how the Apache APISIX Ingress Controller delivers zero-downtime configuration changes through etcd-based dynamic routing. Covers the architecture, the ApisixRoute/ApisixUpstream/ApisixPluginConfig custom

  2026-06-14 · 20 min read #apisix#ingress#kubernetes#api-gateway#networking

• The Complete Traefik Guide — IngressRoute, Middleware, and Dynamic Configuration

  A practical walkthrough of Traefik from its architecture (EntryPoint, Router, Middleware, Service) to IngressRoute CRDs, middleware chaining, automatic TLS, Gateway API support, Helm deployment, and troubleshooting. It c

  2026-06-14 · 14 min read #traefik#ingress#kubernetes#networking#devops

• Envoy Gateway Deep Dive: Inside the Gateway API Reference Implementation

  In 2026, with the Ingress API frozen and Gateway API established as the standard successor, this post takes a deep look at Envoy Gateway, the reference-grade implementation built by the Envoy community itself, covering a

  2026-06-14 · 17 min read #envoy-gateway#gateway-api#envoy#kubernetes#ingress

• Ingress Observability — Metrics, Access Logs, and Tracing

  Define the golden signals for an Ingress controller and build a practical observability stack: ingress-nginx Prometheus metrics, Grafana dashboards, structured access logs shipped to Loki, OpenTelemetry distributed traci

  2026-06-14 · 11 min read #ingress#kubernetes#nginx#observability#networking

• ingress-nginx Deep Dive — Architecture, Annotations, and Templates

  A practitioner-focused deep dive into the ingress-nginx controller: its internal architecture, the essential annotation catalog, ConfigMap global tuning, snippet security risks, and the 2026 reality of maintenance mode a

  2026-06-14 · 12 min read #ingress#kubernetes#nginx#networking#devops

• Integrating Ingress with ExternalDNS and Cloud Load Balancers — From Domain to L4

  This post walks the full path traffic travels, from domain registration through the cloud load balancer to the Ingress controller. It covers AWS/GCP/Azure LB integration annotations, ExternalDNS automation, MetalLB, Prox

  2026-06-14 · 18 min read #ingress#kubernetes#externaldns#loadbalancer#dns

• Ingress Multitenancy and Cost Optimization — A Platform Teams Choice

  The trade-offs of a shared controller vs per-tenant controllers, namespace isolation, load balancer cost, resource quotas, noisy-neighbor prevention, security boundaries, and showback models — multi-tenant Ingress operat

  2026-06-14 · 9 min read #ingress#kubernetes#networking#multitenancy#devops

• The Complete Contour Guide - Managing Kubernetes Traffic with Envoy-Based Ingress and HTTPProxy

  Contour is a Kubernetes ingress controller that uses Envoy as its data plane. We cover the HTTPProxy CRD, multi-tenancy through delegation, and Gateway API support with hands-on examples, plus operational tuning and trou

  2026-06-14 · 16 min read #contour#envoy#ingress#kubernetes#httpproxy

• Kernel Tuning for Low-Latency Trading Systems — The War Against Microseconds

  How to tune the Linux kernel in domains like HFT and market making where microseconds decide profit and loss. Covers CPU isolation recipes, NUMA alignment, the kernel-bypass spectrum, C-state pinning, PTP time synchroniz

  2026-06-13 · 17 min read #linux#kernel#low-latency#trading#performance

• eBPF Fundamentals — Programs, Maps, and the World of the Verifier

  A ground-up tour of how eBPF changed Linux kernel programming. We cover program types and maps, how the verifier works, and build a first eBPF program with libbpf and CO-RE from scratch.

  2026-06-13 · 19 min read #ebpf#linux#kernel#libbpf#observability

• A Packet Journey — Tracing the Linux Kernel Networking Stack

  We dissect the full path a packet takes from the NIC through DMA, ring buffers, NAPI, and the IP/TCP layers to the application socket. Covers RSS/RPS/RFS multi-core scaling, GRO/GSO/TSO offloads, XDP, socket buffer tunin

  2026-06-13 · 19 min read #linux#kernel#networking#tcp#xdp

• Cilium Datapath Architecture — Inside a Cluster Without kube-proxy

  A deep dive into the eBPF datapath of Cilium, the CNCF graduated CNI, following a packet on its journey. We cover how kube-proxy replacement works, the identity-based security model, tunneling versus native routing, and

  2026-06-13 · 16 min read #cilium#ebpf#kubernetes#cni#networking

• 2026 Developer Job Market Survival Guide — Resumes and Job Search Strategy in the Age of AI Screening

  How to survive the 2026 hiring market, where AI screening is universal and applications have exploded. Covers an impact-driven resume formula, ATS tactics, portfolio strategy, referral scripts, and salary negotiation, al

  2026-06-12 · 18 min read #career#resume#job-search#interview#networking

• Networking 2026 Complete Guide - Cilium, WireGuard, Tailscale, Nebula, Istio, Envoy, Cloudflare Tunnel Deep Dive

  A complete look at the 2026 production networking stack. eBPF-based K8s networking (Cilium, Calico eBPF, Antrea), overlay VPNs (WireGuard, Tailscale, Nebula, ZeroTier, Twingate, OpenZiti), service meshes (Istio ambient,

  2026-05-16 · 18 min read #networking#cilium#ebpf#wireguard#tailscale

• A Guide to Global Developer Communities: Recurse Center, KubeCon, IndieHackers, Discord, and More (2026)

  Companion piece to the Korean-communities guide. A practical tour of retreats, conferences, forums, and chat servers where the world's developers gather: Recurse Center, KubeCon, the heirs of Strange Loop, !!Con, DEF CON

  2026-05-14 · 24 min read #global-community#developer-community#recurse-center#kubecon#conferences

• TCP Network Stack Deep Dive — State Machine, Congestion Control (Cubic vs BBR), Nagle, Delayed ACK, and the Evolution to QUIC (2025)

  A TCP connection traverses 11 states from open to close. Why does TIMEWAIT linger for 30 seconds? Why does Nagle meeting Delayed ACK produce a 40ms stall? Why does BBR beat Cubic, and why did Google abandon TCP for QUIC?

  2026-04-15 · 9 min read #tcp#networking#congestion-control#bbr#cubic

• Developer Networking & Personal Branding Complete Guide: LinkedIn, Twitter, GitHub, and Conferences for Introverts (2025)

  Granovetter's "Strength of Weak Ties" theory and low-cost networking strategies for introverted developers. LinkedIn profile optimization, Twitter/X developer networking, GitHub profile polishing, conferences from attend

  2026-04-15 · 14 min read #networking#personal-branding#linkedin#twitter#github

• Linux I/O Evolution Deep Dive — blocking, select, poll, epoll, io_uring (2025)

  How do you handle not 10,000 but 1,000,000 concurrent connections on a single server? 30 years of Linux I/O API evolution — from the 1970s blocking read, through the limits of select/poll, the epoll revolution, to iourin

  2026-04-15 · 11 min read #linux#io#epoll#io-uring#async

• eBPF Deep Dive — The VM, Verifier, XDP, and CO-RE That Made the Linux Kernel Programmable (2025)

  Injecting safe code into the kernel — that is the eBPF revolution. This post dissects eBPF from internals to practice: the VM and bytecode, the Verifier that enforces safety, maps (Hash/Array/Ring Buffer/Perf), program t

  2026-04-15 · 15 min read #ebpf#linux#kernel#xdp#observability

• The Complete DNS Guide — Resolvers, DNSSEC, DoH/DoT, Anycast, CoreDNS, and Everything Else (2025)

  Everything about DNS — the history of the name system that started with hosts.txt, query flow (stub to recursive to root to TLD to authoritative), record types (A/AAAA/CNAME/MX/TXT/NS/SOA/SRV/CAA/HTTPS/SVCB), EDNS0 and p

  2026-04-15 · 25 min read #dns#dnssec#doh#networking#security