platform-guideline checked
MDN Background Synchronization API
Documents deferring server synchronization work to a service worker, registering named sync tasks, and running deferred work when the device has stable network connectivity again.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Offline mobile retry | Choose offline mobile retry when a mobile action should be preserved and retried after connection loss, flaky network, app backgrounding, or policy-limited connectivity. | The UI never reports server success for a mobile action that is only saved locally or queued. | Supports deferring synchronization work until stable network connectivity returns. |
| Sync state | Choose sync state when local and remote copies both matter and their reconciliation status affects trust, next action, or data integrity. | The sync surface never upgrades local saved or queued work to synced until the remote system confirms acceptance. | MDN supports deferring synchronization work to a service worker until stable network connectivity exists. |
Evidence Role
This source is treated as platform-guideline evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: MDN Web Docs. Last checked: .