Quotas, persistence, partitioning and the Cache API
Comes up in: Web fundamentals, 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
navigator.storage.estimate()- best-effort vs persistent storage
- eviction (LRU by origin
- Safari's 7-day script-writable storage cap for sites without user interaction — cite WebKit)
- storage partitioning by top-level site
- Cache API
- OPFS
Words you will know
What you will practise
- show storage usage and request persistence
Interview questions this answers
- What happens when a site exceeds its storage quota?
- What is storage partitioning?