Browser & Web Performance · Senior · Question 58 of 75

What happens when an origin's storage exceeds the browser's quota or the device runs low on disk?

1The browser compresses the data automatically
2Writes always succeed and older data is kept
✓Correct answer: The browser may evict best-effort storage (IndexedDB, Cache Storage) for the whole origin, unless persistence was granted

Explanation

navigator.storage.persist() requests persistent storage; estimate() reports usage and quota. Offline apps must handle eviction.

Further reading

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