#API

Why REST still dominates, what GraphQL actually solves, and when gRPC really shines. A practical breakdown of all three API protocols with real code and decision criteria.

Every REST API I built had type mismatches between frontend and backend. tRPC eliminated the gap entirely—no API specs, no codegen, just types that flow.

My first LLM API integration brought token cost explosions, latency issues, and hallucinations. Here's what I learned building real features.

When your API returns unexpected data, the Network tab is your best friend. Learn to inspect requests, responses, headers, and timing.

Managing API state with `isLoading`, `isError`, `data`? Learn how Discriminated Unions prevent 'impossible states' and simplify your logic.

Server down? Don't let the user stare at a spinner forever. Learn to set timeouts in http/Dio, implement Retry Logic, and handle errors gracefully.

How to solve CORS errors during development using proxy configuration and important considerations.

Understanding idempotency concepts and implementation through practical experience

A Masterclass in API Design. Covers Constraints, Safe/Idempotent Methods, Content Negotiation, Versioning, Security, Glossary, and FAQ.

Backend: 'Done.' Frontend: 'How to use?'. Automate this conversation with Swagger.

Why did Facebook ditch REST API? The charm of picking only what you want with GraphQL, and its fatal flaws (Caching, N+1 Problem).

Developers can't control the hard disk directly. Instead, we must 'ask' the Kernel via an API. That request is the System Call.

Why did AI and deep learning abandon CPUs for GPUs? From ALU architecture to CUDA memory hierarchy and generative AI principles.