Large Scale Client Storage: IndexedDB Performance Limits

LocalStorage, with its 5MB limit and synchronous runtime thread blocking, is ill-suited for rich data processing. For true query power, developers must turn to **IndexedDB**, a client-side transactional object database.

Quota Estimations

IndexedDB size allocations depend on free disk capacity. Browsers typically allow web origins to request up to 20% of remaining storage. In mobile environments, quotas are tighter, making it crucial to query navigator.storage.estimate() to prevent memory failures.

Performance Optimizations

To maximize throughput, minimize database opens, batch writes inside single transactions, and index only fields used in query filters. Bloating object stores with unnecessary indexes degrades overall write speeds.