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💡 Programming Concepts April 20, 2026 5

IT Concept: Memoization

An optimization technique that caches function results by their inputs to avoid redundant computation.

Memoization — Caches function outputs keyed by inputs so repeat calls return instantly. A subset of caching specific to pure functions. In Python: @functools.lru_cache. In JavaScript/React: useMemo, React.memo. Essential for expensive pure computations like recursive algorithms (Fibonacci, DP) and derived UI state.

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