What are localStorage's capacity and synchronous blocking limitations?
This tests Web Storage API trade-offs and main-thread blocking. A strong answer notes synchronous calls block the main thread; cites a finite per-origin quota; and names IndexedDB for async needs. Red flag: calling it a database or ignoring UI freezes.
This tests your understanding of Web Storage API constraints and main-thread performance. A strong answer explains that localStorage setItem, getItem, and removeItem run synchronously on the main thread, so large operations block rendering and input handling. It also notes the strict per-origin storage quota with eviction risks, the lack of structured search or indexing, and recommends IndexedDB or Cache API for non-blocking, larger-scale storage.
Read the original → developer.mozilla.org
- #localstorage
- #web storage api
- #indexeddb
- #performance
- #frontend
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