DOMAIN 01 // SELECTOR HUB
Systems Engineering
Distributed systems, database internals, low-level design, and AI inference infrastructure.
01.A
High-Level System Design
58 core distributed concepts and 95 battle-tested architectural trade-off decisions.
01.B
Low-Level System Design
OOP domain modeling, design patterns, and 33 classic interview system designs.
01.C
AI & LLM Systems Engineering
Stanford CS336 foundation, KV cache, PagedAttention, speculative decoding, and GPU infra.
01.D
Go Systems Programming
Low-overhead systems programming, raw HTTP servers from scratch, Gin, and GoF patterns.
01.E
PostgreSQL Internals & Architecture
8KB page layout, MVCC, WAL crash recovery, Lehman-Yao B-Trees, and query optimization.