Infinite feed: build
Comes up in: Machine coding, Frontend system design
This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.
What it covers
- cursor pagination
- IntersectionObserver sentinel
- loading guard (no double fetch)
- error + retry
- end of list
- skeletons
Words you will know
What you will practise
- build (timed 75 min)
Interview questions this answers
- How do you implement infinite scroll without scroll event listeners?
- How do you prevent duplicate requests when the sentinel stays visible?
- Is infinite scroll accessible? What alternatives do you offer?