Tech Blog
Frontend deep dives, architecture design, performance optimization, and development insights
K8s Cilium eBPF Network Policy: 5 Core Patterns for Zero-Trust Pod Security
From L3/L4 network policies to L7 application-layer filtering, cluster mesh to observability — a complete Cilium eBPF production guide
JavaScript Memory Leak Debugging in Practice: A Complete Pipeline from Chrome DevTools to Automated Detection
Systematically catalog common frontend memory leak patterns, master Chrome DevTools Memory panel techniques, and build automated memory leak detection workflows.
Infrastructure as Code with Pulumi: 5 Patterns to Manage Cloud Resources with TypeScript
From Pulumi project setup to multi-cloud deployment and state management, covering the complete production-grade Pulumi IaC implementation
IntersectionObserver in Practice: Lazy Loading, Infinite Scroll, and Viewport Detection
A systematic guide to the IntersectionObserver API covering lazy loading, infinite scroll, virtual lists, and exposure tracking, with performance comparisons against traditional scroll listeners.
IndexedDB in Practice: Large-File Storage and Offline Architecture in the Browser
A deep dive into IndexedDB transaction models, object store design, version migration strategies, and how ToolsKu uses IndexedDB for large-file caching and offline processing.
AI Vector Embedding Model Deep Comparison (2026): OpenAI, Cohere, BGE, E5 & Jina
A comprehensive 2026 comparison covering MTEB benchmarks, Matryoshka representations, multilingual capability, pricing, and on-prem deployment — with a precise selection guide for retrieval workloads.
HTTP/3 & QUIC Protocol in Practice: Next-Generation Web Transport
Deep dive into HTTP/3 and QUIC: evolution from HTTP/1.1 to HTTP/3, QUIC internals (0-RTT, connection migration, no head-of-line blocking), HTTP/3 vs HTTP/2 comparison, enabling HTTP/3 in Nginx/Caddy/Cloudflare, Go quic-go development, debugging tips, performance benchmarks, and migration guide.
IaC with Pulumi and TypeScript: Infrastructure as Code for Developers
Complete guide to using Pulumi with TypeScript for infrastructure as code, covering architecture, AWS/GCP/Azure deployment, stack management, testing, and comparison with Terraform and CDK
HTTP/3 Migration in Practice: Nginx, Caddy, and Cloudflare Configuration Guide
Deep dive into HTTP/3 and QUIC protocol migration. Covers Nginx HTTP/3 configuration, Caddy auto-HTTPS, Cloudflare HTTP/3 setup, migration verification, and rollback strategies for smooth upgrade to next-gen web protocol.
HTTP/3 QUIC Multipath: 5 Core Configurations for Dual-Path Redundancy & Bandwidth Aggregation
Complete guide to Multipath QUIC, covering MP-QUIC client configuration, multipath scheduling strategies, WiFi-cellular seamless failover, bandwidth aggregation with load balancing, and performance benchmarking for dual-path redundancy and doubled bandwidth
HTTP/3 & QUIC Debugging: 5 Production Patterns from Packet Capture to Performance Analysis
Complete guide to HTTP/3 and QUIC debugging, covering Wireshark QUIC dissection, qlog analysis, Chrome NetLog, curl HTTP/3 debugging, and production monitoring
HTTP/3 QUIC Load Balancer: 5 Core Configurations for Connection ID Routing & Production Deployment
Complete guide to QUIC load balancer deployment, covering connection ID routing implementation, Nginx QUIC load balancing, health check strategies, session persistence & failover, and multi-LB cascading for production HTTP/3 infrastructure
HTTP/3 QUIC Congestion Control: 5 Core Strategies for BBR v2 vs Cubic Production Tuning
Complete guide to QUIC congestion control algorithms, comparing BBR v2 vs Cubic, covering Nginx QUIC configuration, BBR v2 parameter tuning, Cubic tuning, adaptive algorithm switching, and performance benchmarking to boost bandwidth utilization by 40%
HTTP/3 QUIC Datagram Extension: 5 Core Patterns for Low-Latency UDP-over-QUIC Services
Complete guide to the QUIC datagram extension, covering basic QUIC Datagram sending, HTTP/3 Datagram API, WebTransport Datagram integration, loss detection and retransmission strategies, and production-grade real-time communication services for millisecond-latency UDP-over-QUIC
Hermes Agent v0.16.0 Deep Review: From Geek Toy to Mass Tool with Remote Gateway
A comprehensive review of Hermes Agent v0.16.0 'Surface Release', featuring native desktop app, remote gateway, MCP integration, and production deployment tutorial for enterprise AI agent applications.
HTTP/3 QUIC 0-RTT Optimization: 5 Core Strategies for Connection Migration & Latency Reduction
Complete guide to HTTP/3 QUIC 0-RTT optimization, covering Nginx HTTP/3 configuration, 0-RTT security hardening, QUIC connection migration, congestion control tuning, and performance benchmarking to reduce first-byte latency by 60%
Go Zero Trust Network: BeyondCorp Microservice Security Architecture 2026
From mTLS mutual authentication to SPIFFE identity framework, 5 core patterns for building Go zero trust microservice security with production-ready code
Go WebSocket Real-Time Chat: Build Scalable Messaging Server from Scratch with 5 Key Architectures
From connection management to room architecture, message broadcasting, and horizontal scaling — a complete production-grade Go WebSocket real-time chat guide
Go Testing with Testify: Production Unit Test Patterns and Best Practices 2026
Master Go testing with testify framework, covering assert vs require, table-driven test suites, mock interface simulation, HTTP handler testing, and CI integration
Go+Wasm Plugin System: 5 Practical Patterns from Dynamic Loading to Secure Sandbox
Complete guide to building Go+Wasm plugin systems with Wazero runtime, plugin interface design, host-guest communication, and capability-based security