API Learning Journey 🚀

Documenting my journey learning APIs from absolute beginner to professional/master level — following a structured 7-level mastery roadmap.

📌 About

I started this journey with zero prior knowledge of APIs, backend development, or web services. This repo tracks my weekly progress, notes, hands-on labs, and projects as I progress through each mastery level.

Learning method: Concept → Example → Hands-on Lab → Challenge → Quiz → Review (repeated every session)

🏆 Mastery Levels

Level	Title	Status
1	API Awareness	🔄 In Progress
2	API User	⬜ Not Started
3	API Developer	⬜ Not Started
4	API Security	⬜ Not Started
5	API Engineer	⬜ Not Started
6	API Architect	⬜ Not Started
7	API Master	⬜ Not Started

🗺️ Roadmap

Level 1 — API Awareness

• What is an API? (real-world analogies)
• Client → API → Server → Database → Response flow
• HTTP basics & methods (GET, POST, PUT, PATCH, DELETE)
• HTTP status codes (2xx, 3xx, 4xx, 5xx)
• URL structure (endpoints, path & query parameters)
• JSON data format

Level 2 — API User

• Reading API documentation
• API testing tools (cURL, Postman, Insomnia)
• Sending GET/POST requests, headers, parameters
• Inspecting responses & debugging requests

Level 3 — API Developer

• REST principles & resource-oriented design
• CRUD project (Student Management API)
• Backend language fundamentals
• Building my first API (framework: TBD)
• Connecting APIs to databases

Level 4 — API Security

• Authentication vs Authorization
• API keys, Bearer tokens, JWT, OAuth 2.0
• Security best practices (HTTPS, CORS, rate limiting, input validation)

Level 5 — API Engineer

• API documentation (OpenAPI/Swagger)
• API testing (unit, integration, e2e)
• Error handling design
• API versioning
• Pagination, filtering, sorting
• Rate limiting & webhooks

Level 6 — API Architect

• GraphQL
• gRPC
• API gateways & microservices
• API performance & observability
• Deployment (Docker, CI/CD)

Level 7 — API Master

• Professional API design review
• Real-world API architecture analysis
• Capstone project (production-ready API)

📅 Progress Tracker

Week	Topics Covered	Status
Week 1	API basics, request/response flow, HTTP methods, status codes	✅ Done

📂 Sessions

• Week 1: API Basics

🛠️ Tools & Stack

• Postman (API testing)
• Claude AI (guided mentorship)

🎯 Project Roadmap

Beginner: Weather API client → Public API explorer → CRUD Student API

Intermediate: Authentication API → E-commerce API → Blog API

Advanced: Payment simulation → Webhook system → API Gateway

Professional: Production-ready e-commerce backend → Microservices architecture → Full API platform