Groovy memoize with memoize() offers built-in caching, memoizeAtMost(), memoizeBetween(), and memoizeAtLeast(). 10+ tested examples for caching closure results. “The fastest computation is the one you never have to do. Memoization turns expensive functions into instant lookups.” Donald Knuth, The Art of Computer Programming Last Updated: March 2026 | Tested on: Groovy 5.x, Java 17+ | Difficulty: Intermediate | Reading Time: 17 minutes When a function takes 3 seconds to compute and you call it with the same arguments 10 times, ... Read More