Featured · Software

Node LRU cache: the Map trick is 25x slower than lru-cache

The popular "Map delete-and-set" LRU cache is about 25x slower than the lru-cache package once the cache holds 10,000 keys. In our Node.js benchmark it managed 0.59 million operations per second,

Bar chart comparing operations per second of six Node.js LRU cache implementations

October 21, 2026 · 10 min read · 0 views

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