Blog Jun 28, 2026 intermediate
Why I'm Building an AI Infrastructure Learning OS
A personal operating system for turning backend and AI infrastructure learning into durable, searchable engineering knowledge.
#systems
7 public notes
Docs Jun 28, 2026 intermediate
API Design for Backend Services
A compact mental model for designing reliable, boring, useful APIs.
Docs Jun 28, 2026 intermediate
Backend and AI Infrastructure Roadmap
A role-readiness roadmap for backend, cloud, data, AI API, and production infrastructure skills.
Docs Jun 28, 2026 intermediate
Database Design Mental Models
A durable set of data modeling questions for relational and document databases.
Docs Jun 28, 2026 intermediate
Observability and Reliability Basics
A backend engineer's starting point for logs, metrics, traces, alerts, and incident-ready systems.
Learning Log Jun 28, 2026 beginner
Week 1: Backend Infrastructure Ramp
A first weekly learning log for backend, deployment, security, observability, and AI infrastructure readiness.
Projects Jun 28, 2026 beginner
bianrui-knowledge Architecture
A short architecture note for the personal knowledge base itself.