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Building An Offline-Friendly Image Upload System
- Poor network connectivity can lead to frustrations when uploading files online, requiring constant monitoring and retries.
- Building an offline-friendly image upload system can significantly enhance user experience in such situations.
- The system involves using PWA technologies like IndexedDB, service workers, and the Background Sync API.
- Users select an image which is then stored locally in IndexedDB if a stable network connection is not available.
- The service worker detects when the network is restored and initiates the upload process automatically.
- Implementing the system involves allowing image selection, registering the service worker, and checking network connectivity.
- Sync events are registered to handle pending uploads, and the background sync process takes care of uploading images.
- Images are stored in IndexedDB asynchronously to prevent blocking the main JavaScript thread.
- Retrieving and uploading images from IndexedDB is managed by the service worker once the network connection is stable.
- Considerations include addressing limitations such as unreliable internet connectivity detection and browser support.
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