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HTTP Methods
- GET — Retrieve data
- POST — Create new data
- PUT — Fully update existing data
- PATCH — Partially update data
- DELETE — Remove data
- HEAD — Retrieve headers only
- OPTIONS — Discover supported methods
- TRACE — Diagnostic tracing
API Types
- REST — Standardized resource-based APIs
- GraphQL — Flexible, query-based APIs
- WebSocket — Real-time, full-duplex communication
- gRPC — High-performance, binary RPC
- MQTT — Lightweight messaging for IoT
- SOAP — Enterprise legacy protocol
Authentication Protocols
- JWT (JSON Web Tokens)
- OAuth 2.0
- API Keys
- Basic Auth
- Bearer Token
- OpenID Connect
Best Practices for API Development
- Enforce HTTPS everywhere
- Handle errors gracefully
- Implement API versioning
- Add pagination for large datasets
- Apply rate limiting to prevent abuse
- Maintain consistent naming conventions
- Prioritize clear documentation
- Build a smart caching strategy
You Should Know: Practical Implementation
HTTP Methods in Action (cURL Examples)
GET Request
curl -X GET https://api.example.com/users
POST Request
curl -X POST -H "Content-Type: application/json" -d '{"name":"John"}' https://api.example.com/users
PUT Request
curl -X PUT -H "Content-Type: application/json" -d '{"name":"John Doe"}' https://api.example.com/users/1
DELETE Request
curl -X DELETE https://api.example.com/users/1
API Security with JWT
Generate JWT Token (Linux)
openssl rand -hex 32 Secret Key
jwt encode --secret "your-secret-key" '{"user":"admin"}'
Verify JWT Token
jwt decode --secret "your-secret-key" "your.jwt.token"
Rate Limiting with Nginx
http {
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;
}
}
}
Monitoring APIs with Linux Commands
Check API Connections netstat -tuln | grep :443 Monitor API Requests tail -f /var/log/nginx/access.log | grep "POST /api" Stress Testing ab -n 1000 -c 100 https://api.example.com/users
What Undercode Say
Mastering HTTP methods, API types, and authentication protocols is essential for modern tech professionals. Implementing best practices like HTTPS enforcement, rate limiting, and JWT security ensures robust API development. Automation with cURL, OpenSSL, and Nginx enhances efficiency, while monitoring tools like `netstat` and `ab` help maintain performance.
Expected Output:
A secure, high-performance API with proper authentication, rate limiting, and monitoring.
Relevant URL:
References:
Reported By: Ashsau Heres – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
