General · Learning hub

OpenID Connect notes for developers

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

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01 · OpenID Connect

ID Tokens, Claims & OAuth2's Missing Piece

ID Tokens, Claims & OAuth2's Missing Piece Authentication on Top of Authorization OpenID Connect (OIDC) is an identity layer built on top of OAuth 2.0. OAuth2 alone only handles delegated authorization (granting access t…

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02 · OpenID Connect

Flows, PKCE & OIDC vs. SAML

Flows, PKCE & OIDC vs. SAML Authorization Code Flow The recommended flow for most apps: the client receives a short-lived authorization code via browser redirect, then exchanges it for tokens in a direct back-channel req…

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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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