FastAPI's Strength
The automatic documentation, type hints, and async support make development so much faster. Plus, the performance is incredible!
Posts by ditch-11
Telnet
You can telnet google.com 80 to use Telnet as a simple web client (besides remote access). On windows cmd you can press Ctrl + ] to open telnet configuration: set localecho - to see what was typed. Each keystroke is a separate TCP packet, which is immediately sent to the server.
JWT Authentication Demystified
JSON Web Tokens seemed scary at first, but they're actually pretty simple. Encode some user data, sign it with a secret, and use it to verify requests. FastAPI + PyJWT makes it straightforward.
Testing FastAPI Applications
FastAPI's TestClient makes testing a breeze. Write tests for your endpoints, mock dependencies, and catch bugs before they hit production. Your future self will thank you.
API Versioning Strategies
APIs evolve. Version them from day one! Whether you use URL prefixes (/v1/users) or headers, plan for change. Breaking changes without versioning breaks trust.
Custom Validators in Pydantic
Need validation beyond type checking? Pydantic's field_validator and model_validator decorators let you add custom logic. Validate emails, check password strength, whatever you need.
Pagination: Don't Return Everything
Returning 10,000 records in one response? Please don't. Implement pagination with limit and offset (or better, cursor-based). Your database and clients will be happier.