Nguyễn Đức An

Software Engineer, Philosophy & Psychology Interest

Grill your weaknesses, be an ultra-learner
Ref: Ultra-learning, Scott H. Young

Intuitive Curious (Meta high-level thinking): understand high-level idea from Figma and System Design.
Coding Skills: Latter solution is better than previous solution.
System Design: Design high-level solution + verified each requirement and enhanced questions and facts (metrics, current system).

Meta thinking first: Draw high-level idea map before doing anything.
Structured Thinking: Order the actions.
Implementation Skills: Understand full flow, not only tickets.
Retain long-term knowledge: store facts, feedback, concepts, active retrieve it in long-term knowledge base.
Present for impact (teach, convince, motivate): stimulate to explain your thinking for other people follow Feynman Technique, 3-sentences rules for other needs, use body language and focus to main point to grab user attention.
Improve quality of outreach, connections: enhance outreach to open communicate with strangers, value connections, and make service for community.

Fact is what happening. Proposal comes with trade-offs and reasons.
Needs are about survival. Wants are about desires.
How to learn new thing: See it (mostly 70%). Do it (for high-execution required skills). Feedback it (be corrective feedback with insights)

System Design - Cloud Pillars

Here is solutions for system design for cloud pillars

Shared responsibility
Region + AZs (3 - 5 data centers = N connected virtual machines)
Compute: EC2, ECS, EKS, Lambda.
Storage: S3, EBS (MySQL,…), EFS (Config,…), Gracier (Hot and cold access)
Network: VPC (VPN), Internet Gateway (Public network), Direct Connect (Internal network), Global Accelerator + Cloud Front, Istio (Gateway + Load Balancer)

July 7, 2026