Domain-driven design

Part 1

Framework-agnostic
Transport-agnostic
Controller as a single entry-point
Error handling
Minimum dependencies

Part 2

Dependency injection
Implement and inject logger
Code isolation
Prevent memory leaks
Prevent mixins and global state

Part 3

GRASP, SOLID, DDD, GoF, LoD for Node.js
Live reload
Semaphore
Schema-based approach
Graceful shutdown
Contract validation