Debouncing:

typing slow = 200ms typing fast = 30ms

Perfomance:

iphone pro max = 14 letter * 1000 = 140000 with debouncing= 3 API calls * 1000 = 3000 Debouncing with 200ms

if difference between 2 key strokes is <200ms - DECLINE API call 200ms make an API call

Cache: time complexity tro search in array = O(n) time complexity tro search in Object = O(1)

[i, ip, iph, iphone]

{ i: ip: iph: iphone: }

new Map();