Suspense Islands Playground
Profile (critical) is awaited in the server loader — it lands in the initial HTML shell. Feed / Recs / Activity are returned as Promises and stream in independently. Each island has its own <Suspense> + <ErrorBoundary>, so one failure does not affect the others.
Controls
Feed
Recommendations
Activity
Mode
Profile critical — first-view
Sushichan044
Frontend engineer exploring Suspense patterns.
Feed deferred ~1.5s
Suspense Island Alpha
First item from the feed.
Suspense Island Beta
Second item from the feed.
Suspense Island Gamma
Third item from the feed.
Recommendations deferred ~2.2s
React Suspense Docs
You are exploring Suspense patterns.
Error Boundary Guide
ErrorBoundary + toast is the right pattern.
Activity deferred ~0.8s
- Opened islands pagejust now
- Read Suspense docs5 min ago
- Explored ErrorBoundary10 min ago