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Whether you’re a beginner or an experienced developer looking to learn about APIs, this comprehensive roadmap will guide you through key concepts and technologies.
1. to APIs
- Definition: APIs (Application Programming Interfaces) define protocols for software interaction.
- Types:
- Public (e.g., Twitter API)
- Private (internal use)
- Partner (shared with select partners)
- Composite (combines multiple APIs)
2. API Architectures
- REST: Stateless, HTTP-based architecture.
- GraphQL: Query-specific data retrieval.
- SOAP: XML-based protocol.
- gRPC: High-performance RPC by Google.
- WebSockets: Real-time bidirectional communication.
3. API Security
- Authentication: OAuth 2.0, JWT.
- Rate Limiting: Prevent abuse via request limits.
- HTTPS: Encrypt data in transit.
4. API Design Best Practices
- RESTful conventions: Proper HTTP methods (
GET,POST,PUT,DELETE). - Versioning: URL (
/v1/users), headers (Accept: application/vnd.api.v1+json). - Pagination:
?limit=10&offset=20. - Error Handling: HTTP codes (
404 Not Found,500 Server Error).
5. API Documentation
- OpenAPI/Swagger: Standardized API specs.
- Postman: Interactive API testing/docs.
- ReDoc: Clean API documentation renderer.
6. API Testing
- Postman: Automated API tests.
- JMeter: Load/performance testing.
- Mocking: Postman mock servers, Mockoon.
7. API Management
- Gateways: AWS API Gateway, Kong, Apigee.
- Monitoring: Datadog, ELK Stack.
8. Implementation Frameworks
- Python: FastAPI, Flask.
- Node.js: Express.js.
- Java: Spring Boot.
🔗 Full Roadmap: https://lnkd.in/dPFjUB9y
You Should Know:
REST API Example (Python – Flask)
from flask import Flask, jsonify, request
app = Flask(<strong>name</strong>)
@app.route('/api/data', methods=['GET'])
def get_data():
return jsonify({"message": "Hello, API!"})
if <strong>name</strong> == '<strong>main</strong>':
app.run(debug=True)
Testing with cURL
curl -X GET http://localhost:5000/api/data
JWT Authentication (Node.js – Express)
const jwt = require('jsonwebtoken');
const token = jwt.sign({ user: 'admin' }, 'secret_key', { expiresIn: '1h' });
console.log(token);
Rate Limiting with Nginx
limit_req_zone $binary_remote_addr zone=api_limit:10m rate=10r/s;
server {
location /api/ {
limit_req zone=api_limit burst=20;
proxy_pass http://backend;
}
}
GraphQL Query Example
query {
user(id: "1") {
name
email
}
}
Load Testing with Apache Benchmark
ab -n 1000 -c 100 http://api.example.com/data
What Undercode Say:
APIs are the backbone of modern software. Mastering REST, GraphQL, and security (OAuth, JWT) is crucial. Automate testing (Postman, JMeter) and enforce rate limiting. Use API gateways (Kong, AWS) for scalability. Always document with OpenAPI.
🔹 Linux Command for API Logs:
grep "GET /api" /var/log/nginx/access.log | awk '{print $1}' | sort | uniq -c
🔹 Windows PowerShell API Test:
Invoke-RestMethod -Uri "http://api.example.com/data" -Method Get
🔹 Dockerized API Deployment:
docker build -t myapi . && docker run -p 5000:5000 myapi
🔹 Kubernetes API Scaling:
kubectl scale deployment api-deployment --replicas=5
Expected Output: A scalable, secure, and well-documented API system.
Expected Output:
A detailed API development guide with practical code snippets and commands.
References:
Reported By: Milanmilanovic %F0%9D%97%94%F0%9D%97%A3%F0%9D%97%9C – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
