General · Learning hub

HTTP notes for developers

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

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01 · HTTP

Methods, Status Codes & Statelessness

Methods, Status Codes & Statelessness HTTP & HTTPS HTTP is the application-layer protocol structuring client/server request-response exchanges, layered on TCP. HTTPS is HTTP + TLS/SSL encryption — protecting against eave…

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02 · HTTP

Headers, Content Negotiation & CORS

Headers, Content Negotiation & CORS Headers vs. Body Headers carry metadata (Content-Type, Authorization, Cache-Control) as key-value pairs; the body carries the actual payload (JSON, an uploaded file). GET requests typi…

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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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