memoization
Reuse a computed result while its inputs are unchanged.
Use this when Profiling shows repeated expensive computation during rendering.
without the term
“The page is laggy when typing because it recalculates this huge filtered and sorted list on every keystroke. Can you make it stop redoing that work when nothing relevant changed?”
with the term · How do you ask a model for memoization?
Memoize this measured expensive calculation. Include all inputs and compare render cost before and after the change.
What is memoization?
Memoization trades memory and input comparisons for less repeated work. Its benefit depends on cost and stable inputs.
Why does memoization matter when vibe coding?
Adding caches everywhere can hide dependencies and make simple code harder to understand.
How do you do memoization?
Measure the expensive operation first. Check both correctness after input changes and actual work avoided.
What goes wrong with memoization?
A cache with incomplete dependencies displays a stale result.