Design Patterns Part 3 - TeamBoard API: Building a Production Real-Time Collaboration Backend
The third app in the Design Patterns series. Build a real-time collaborative task board — boards, tasks, sections, undo/redo, permissions, and live sync — on the same FastAPI/PostgreSQL platform standards as FinPay (dp-1006) and ShopFlow (dp-1007). Nearly every pattern here is reapplied in a new, collaboration-shaped domain; Facade is the one genuinely new pattern, earned by the need for a clean board API over a growing set of subsystems.
Created by David Essien, DevOps and SRE Engineer/Instructor
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Program Syllabus
A structured breakdown of your learning journey.
Coming Soon
Capstone Projects
Real-Time Board Sync Engine
Boards, sections, and nested tasks built on Composite and Iterator, with live updates over WebSockets via a formalized Observer event bus.
Collaborative Undo/Redo System
MacroCommand-based undo/redo with conflict handling for concurrent edits, backed by Memento snapshots for full version history.
Board Service Facade
A single, clean BoardServiceFacade over sync, storage, permissions, and history — coordinated internally by a BoardMediator.
Capstone: Board Restore With Audit History
A full board-restore feature with complete audit history, justified against every pattern used across the TeamBoard build.
Prerequisites
- Design Patterns Part 1 - FinPay API (dp-1006)
- Design Patterns Part 2 - ShopFlow API (dp-1007)
- Python Fundamentals
- SQL Fundamentals
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