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Build coordinated stateful applications with Cloudflare Durable Objects, from stable identities and SQLite persistence to alarms, concurrency and real-time WebSockets.
| Index | Name | Difficulty | Practice |
|---|---|---|---|
| 1 | Route Requests to Named Counters | Beginner | Start Lab |
| 2 | Persist a Room Activity Log | Beginner | Start Lab |
| 3 | Coordinate Concurrent Reservations | Beginner | Start Lab |
| 4 | Schedule Reservation Expiry | Beginner | Start Lab |
| 5 | Broadcast Room Updates | Beginner | Start Lab |
| 6 | Restore WebSocket Connection Context | Beginner | Start Lab |
| 7 | Diagnose Cross-Room State Leakage | Beginner | Start Lab |
| 8 | Overbooked Workshop | Beginner | Start Challenge |
LabEx is a hands-on learning platform for beginners.
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