My Daily AI Workflow: Cutting $150/Month with the Right Model Mix
How I combine multiple AI products to boost efficiency and cut costs
I Gave Up on Obsidian and Notion and Built My Own AI-Powered Second Brain
I gave up on Obsidian and Notion and built my own AI-powered second brain
Best Practices for Go Monorepo Dependency Management
Best practices for Go Monorepo dependency management, using modular go.mod files and replace directives to solve version conflicts and improve build efficiency.
ArgoCD Monorepo Performance Optimization (Part 2): Cache, Sidecar & Git Tuning
Part 2: How we reduced ArgoCD sync time from 3min to under 30s — cluster cache tuning (ARGOCD_CLUSTER_CACHE_RESYNC_DURATION), sidecar plugin tarball optimization (95% CPU drop, 3s → 400ms), proactive git fetch, and scheduled git gc with readiness probe gating.
ArgoCD Monorepo Performance Optimization: Scaling to 100k+ Apps
How we scaled ArgoCD to manage 100k+ applications in a single Monorepo — covering repo server tuning, disabling auto-refresh, custom sync workflows, and a controller patch to eliminate jitter.
How to Manage Multi-Wallet Crypto Assets: Hardware Wallets & Automated Tracking
A practical guide to managing multi-wallet crypto assets securely — hardware wallets (Ledger, Tangem), risk diversification strategies, and Track3, an open-source portfolio tracker that auto-syncs balances across wallets and exchanges.
Cilium from 0 to 0.1
Cilium and eBPF from scratch: how Linux processes packets, how Cilium replaces iptables with eBPF programs, XDP/TC hook points, BPF maps, tail calls, and hands-on troubleshooting with bpftool and cilium-dbg.
Kubernetes Gateway API
An introduction to the Kubernetes Gateway API (KGA), its evolution from Ingress, and its key features like traffic management, role-oriented design, and extensibility.
A WebSocket Connection Leak Troubleshooting Investigation
Root-cause analysis of a Go WebSocket connection leak — why server-side close doesn't terminate the client goroutine, how to detect goroutine leaks with pprof, and the fix using proper close handshake.
ExitCode: 128 with No Error Message
Troubleshooting a mysterious Exit Code 128 in Drone CI caused by Pod image conflicts between the runner and another service modifying image addresses.
How to Schedule Drone CI to Virtual Kubelet
Optimizing Drone CI costs and efficiency by scheduling build tasks to Virtual Kubelet (Alibaba Cloud ECI) using the new Kubernetes Runner.
What Happens During a Drone Build in K8S
A detailed walkthrough of the Drone CI build process in Kubernetes, from webhook triggering to pipeline configuration parsing and scheduling.
What Happens Behind kubectl run
Unveiling the internal process of 'kubectl run', from API Server validation, authentication, admission control to Controller and Scheduler execution.
kubeDNS and CoreDNS
KubeDNS vs CoreDNS: how Kubernetes DNS resolution actually works — architecture comparison, resolv.conf ndots behavior, dnsmasq, plugin chain, and when to switch from KubeDNS to CoreDNS.
Golang sync.Map Source Code Analysis
Analyzing Golang's sync.Map source code to understand why concurrent writes to native maps panic and how sync.Map ensures thread safety.
How to Remove Sensitive Files from Git History Permanently
A practical guide to removing sensitive files from Git history permanently — covering git filter-branch, BFG Repo-Cleaner, and force-push steps to protect leaked credentials, API keys, or passwords.
How to Implement a Rate Limiter with Redis
Implementing rate limiters with Redis from scratch — fixed window counter, sliding window log, sliding window counter, token bucket, and leaky bucket algorithms with code examples and Redis INCR/EXPIRE patterns.
Solving Golang Elastic Auto Conversion of Connection Address
Solving the issue where olivere/elastic client automatically converts public addresses to internal IPs by disabling the Sniff feature.
How to Read Go's http.Request Body Multiple Times
Why Go's http.Request body can only be read once and how to fix it — deep dive into io.ReadCloser, request body consumption, and a reusable ReadCloser wrapper for retrying or logging HTTP requests.