Connecting VPCs to Other Networks — Peering, VPN, Transit, PrivateLink

Comparing the four mechanisms that connect a VPC to other VPCs, on-premises networks, and external services — Peering, Transit Gateway, Site-to-Site VPN, and PrivateLink — across topology and cost.

October 20, 2025 · 5 min read

VPC Traffic Flow with Route Tables

How Route Tables decide traffic paths inside a VPC, the role of Internet Gateway and NAT Gateway as external exits, and the actual meaning of Public/Private Subnet.

October 1, 2025 · 5 min read

VPC and the Isolation Model

How VPC simulates a private network boundary by combining IP CIDR, Subnet, and Tenancy. Includes vendor naming map across AWS / GCP / Azure / Alibaba.

September 15, 2025 · 5 min read

Zero-Downtime Data Transition Pattern

A three-step pattern combining dual write and fallback read to transition data formats in live services without downtime.

April 15, 2025 · 4 min read

MLflow and the ML Lifecycle

Which slot of the ML lifecycle each MLflow component fills, and which pieces a lightweight team can pick.

February 20, 2025 · 6 min read

Circuit Breaker

A Circuit Breaker’s trip trigger and recovery strategy must be designed together. Trip without recovery cuts the dependency permanently; recovery without a trip basis becomes meaningless cycling.

February 15, 2025 · 7 min read

Choosing a Model Training Framework: sklearn vs ONNX

sklearn and ONNX aren’t competing at the same layer. Once you separate their roles, the real question becomes ‘do I need an ONNX layer at all?’

February 1, 2025 · 5 min read

Revisiting Logistic Regression

The structure and characteristics of Logistic Regression, and why an old model still serves as the baseline in CTR prediction.

January 15, 2025 · 5 min read