Background Sync
Background Sync is a web platform API that allows web applications to defer actions until the user has stable connectivity, enabling reliable offline functionality and data synchronization. It works by registering sync events that are triggered when the device regains network connectivity, even if the user has closed the application. This is particularly useful for ensuring that user actions like form submissions or content updates are not lost during intermittent connectivity.
Developers should learn Background Sync when building Progressive Web Apps (PWAs) that require reliable offline capabilities, such as messaging apps, note-taking tools, or e-commerce platforms where user actions must persist. It's essential for improving user experience in areas with poor network conditions by ensuring data is synchronized automatically once connectivity is restored, without requiring manual retries from users.