System startup: firmware stage (BIOS/UEFI, bootloader search) -> bootloader stage (GRUB, OS kernel selection menu, OS unloading and temporary file system in RAM) -> kernel stage (Kernel, hardware initialization, temporary file system initialization) -> system initialization stage (systemd/PID1, service startup, reaching systemd target state) -> user space (login manager starts).
200 OK, 201 Created, 400 Bad Request, 404 Not Found, 500 Internal Server Error. Learn these codes - they're how your API communicates with the world. FastAPI makes it easy to return the right ones.
VLAN (Virtual Local Area Network) is a technology that allows you to divide one physical network (one switch) into several isolated logical networks.
Response models aren't just for documentation - they filter out sensitive fields automatically. Define what goes out, and Pydantic handles the rest.
REST isn't the only game in town. FastAPI supports WebSockets for real-time communication. Chat apps, live updates, notifications - all possible!
Add a /health endpoint to your API. Load balancers and orchestrators need to know if your service is alive. Return 200 if healthy, details if not.
GraphQL is trendy, but REST is battle-tested. Choose based on your needs, not hype. FastAPI excels at REST, but Strawberry brings GraphQL if you need it.