30 Days. 30 Challenges. 1 Developer.
Today marks the end of the GDGoC Bowen 30-Day
Backend Challenge. Here's everything I built.
What I Built — Day by Day
Foundation (Days 1-5)
- Day 1 → HTTP & Hello World with FastAPI
- Day 2 → RESTful routes
- Day 3 → Git workflow and branching
- Day 4 → Dynamic path parameters
- Day 5 → Query params & Pydantic validation
Data & APIs (Days 6-14)
- Day 6 → SQLAlchemy data models
- Day 7 → GET all items endpoint
- Day 8 → Serializers & DTOs
- Day 9 → POST create endpoint
- Day 10 → Production-ready routes
- Day 11 → DELETE endpoint
- Day 12 → Global error handling
- Day 13 → Pagination & filtering
- Day 14 → Swagger API documentation
Auth & Security (Days 15-18)
- Day 15 → Bcrypt password hashing
- Day 16 → JWT authentication
- Day 17 → Permissions & ownership
- Day 18 → Environment variables & secrets
DevOps & Deployment (Days 19-20)
- Day 19 → Docker containerization
- Day 20 → Deployed to Render
Advanced (Days 21-24)
- Day 21 → Pytest unit & integration tests
- Day 22 → Database relationships
- Day 23 → CORS & API contracts
- Day 24 → In-memory caching
Capstone — To-Do App (Days 25-30)
- Day 25 → PRD & planning
- Day 26 → Full CRUD API
- Day 27 → 10 automated tests
- Day 28 → Deployed to Render
- Day 29 → Filtering, pagination, docs
- Day 30 → Final polish & README
The Capstone Project
Live URL:
Docs:
A fully production-ready To-Do App API with:
- JWT authentication
- Full CRUD with ownership
- Priority levels and filtering
- Pagination
- 10 automated tests
- Full Swagger documentation
What I Learned
30 days of consistent building taught me more
than months of passive learning.
The most important lessons:
- Consistency beats intensity
- Build in public — it keeps you accountable
- Every concept builds on the previous one
- Documentation is part of the product
- Tests give you confidence to keep building
What's Next
This is not the end — it's the foundation.
The next step is building more complex systems,
contributing to open source and preparing for
the Elevate career development meetup.
Thank you GDGoC Bowen for this challenge. 🙏
Day 30 done. The journey continues. 🔥
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