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UUID Studio Blog

Tutorials on UUIDs, MongoDB, JSON, JWT, encoding, crypto, and API debugging. Every article links to free browser tools you can use immediately.

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Latest articles

JSON

Invalid JSON: common causes

Missing braces, trailing commas, unescaped quotes, and UTF-8 issues - fix invalid JSON fast with validator error locations.

JSONAPIData

JSON

Nested JSON structures explained

Objects inside objects, arrays of objects, and deep paths - how to model, query, and debug nested JSON without silent shape bugs.

JSONAPIData

JWT and security

JWT in microservices

Pass JWTs between microservices, validate at the API gateway, and avoid trust gaps when internal services forward Bearer tokens.

JWTSecurityAuth

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Crypto and hashing

What is HMAC?

CryptoHashingSecurity

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