General · Learning hub

JWT notes for developers

Master JWT with a curated set of 2 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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01 · JWT

Structure & Signing

Structure & Signing Anatomy of a JWT A JWT has three Base64URL-encoded, dot-separated parts: header.payload.signature. Header and payload are just encoded JSON — readable by anyone, NOT encrypted. Never put secrets or se…

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02 · JWT

Auth Flow & Security Trade-offs

Auth Flow & Security Trade-offs Sending the Token GET /api/orders HTTP/1.1 Authorization: Bearer eyJhbGciOiJIUzI1NiIs... # "Bearer" — whoever holds the token gets access, no further proof required. # A server verifies th…

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TypeScriptgeneral

Interview Questions

TypeScript Interview Questions Comprehensive TypeScript interview questions covering type system, generics, utility types, and best practices: Fundamentals 1. What is TypeScript? TypeScript is a typed…

Mar 28, 2026

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TypeScriptgeneral

Advanced Types (Generics & Utility Types)

TypeScript Advanced Types Generics // Generic function function identity<T>(arg: T): T { return arg; } const num = identity<number>(42); // Explicit const str = identity('hello'); // Inferred // Gener…

Mar 3, 2026

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