Guides
In-depth, practical write-ups on working with JSON and APIs, from debugging a parse error to choosing an API protocol. Each one is written to be useful without any Nivoapps product.
A practical field guide to the JSON parse errors developers run into most: trailing commas, single quotes, comments, unescaped characters, NaN, BOMs, and more — with the exact fix for each.
Learn JSON Schema by building one: types, required fields, additionalProperties, enums, arrays, $ref reuse, and the mistakes that make schemas silently accept bad data.
An honest comparison of JSON, YAML, TOML, and XML — syntax, comments, type pitfalls like YAML's 'Norway problem', tooling, and which format fits configuration files versus data exchange.
What's actually inside a JSON Web Token, the difference between decoding and verifying, HS256 vs RS256, the registered claims that matter, and the security mistakes that keep showing up in real code.
The HTTP status codes that matter when you design or debug an API — 200 vs 201 vs 204, 400 vs 422, 401 vs 403, 404 vs 410, 429, and 502 vs 503 vs 504 — with guidance on when to use each.
A practical comparison of the major API styles — how each works, where each shines, and the trade-offs in caching, tooling, browser support, and real-time behavior — so you can choose deliberately.
How to unblock frontend and integration work with mock APIs: agreeing on a contract first, choosing realistic responses, simulating errors and latency, and avoiding the mock-drift trap.
