IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

919 articles

03 Apr 2026 · 5 min read

communication

English Lesson — Thursday Noon: Communication Phrases

Daily English practice for tech professionals. Noon session — vocabulary deep dive with pronunciation, exercises, and real-world examples.

03 Apr 2026 · 6 min read

2026

OpenAI Responses API: Building Production-Grade Agentic Systems in 2026

OpenAI just extended the Responses API with a shell tool, hosted container workspace, context compaction, and reusable agent skills. Here's what this means for teams building real agentic workflows — with hands-on examples.

03 Apr 2026 · 5 min read

code review

Tech Lead English: How to Give Code Reviews That Actually Help

Master the English phrases and communication skills for giving constructive, clear, and respectful code reviews — especially when working with international teams.

03 Apr 2026 · 4 min read

english

Tech Pronunciation Drills: Shadowing Scripts for Developers

Practical shadowing exercises, tongue twisters, and pronunciation drills for Vietnamese developers who want to sound natural speaking English in tech environments.

03 Apr 2026 · 10 min read

career-english

English Lesson — Friday Evening: Review Career Vocab + Interview Practice Sentences

Daily English practice for tech professionals. Evening session — speaking practice, review, and real-world scenarios.

03 Apr 2026 · 6 min read

2026

The LLM Cost War: Qwen3.6-Plus, Gemini Flash-Lite, and the Dawn of Commodity AI

Alibaba just released its third proprietary model in days. Google's Gemini Flash-Lite costs $0.25 per million tokens. NVIDIA's Nemotron runs 2.2x faster than GPT-OSS-120B. The LLM cost war has arrived — here's what it means for architects choosing AI infrastructure in 2026.

01 Apr 2026 · 5 min read

english

Pronunciation Drills for Tech Professionals: Master the Sounds That Trip Vietnamese Speakers

Practical pronunciation drills for Vietnamese developers — conquer the 'th', 'v/w', 'r/l' sounds and speak English confidently in code reviews and team meetings.

01 Apr 2026 · 6 min read

2026

Tech Digest — April 1, 2026: AI Coding War, Supply Chain Security & Engineering Leadership

This week's top reads for Tech Leads & Engineers: the AI coding tools war heats up, Stripe's autonomous agents ship 1,300 PRs/week, software supply chain becomes the #1 attack vector, and engineering leadership rethinks itself.

01 Apr 2026 · 6 min read

code review

Tech Lead English: How to Give Code Review Feedback That Doesn't Sound Harsh

Learn the exact English phrases Vietnamese tech leads use to give constructive, clear, and professional code review feedback in international teams.