URL Shortener Engine

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URL Shortener EngineHigh-Throughput Link Shortening & Telemetry

Express 5 • MongoDB • Nanoid • React 19 • Redux Toolkit • TanStack Query

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System Design

Cryptographic Slug Generation

High-entropy 7-character Nanoid slugs yielding over 4.3 trillion collision-resistant combinations.

Atomic Click Telemetry

Sub-millisecond HTTP 302 redirection with MongoDB $inc atomic counters eliminating race conditions.

Dual State Architecture

Clean separation of synchronous client UI state in Redux Toolkit and asynchronous server caching in TanStack Query.