Observations:
When our app calls the APNs API for push notifications, we observed significant fluctuations:
- July 15-25: The success response volume increased by 20% compared to the baseline before July 15.
- After July 25: Success rates returned to baseline levels.
- July 30: Success response volume decreased by 10% compared to the pre-July 15 baseline.
Excluded Factors:
- No changes in target audience size or characteristics (business factors ruled out).
- Server logs confirm consistent API request parameters and frequency.
Key Questions:
- Were there any adjustments to response metrics (e.g., success status code definitions) during this period?
- Have other developers reported similar issues?
- Were there server-side configuration updates or known incidents on Apple’s end?
This depends on what error response is being reported by APNs.
If you are seeing fluctuating error responses of 410 Unregistered this is due to a recent re-tuning of our algorithms for reporting tokens that are no longer in use.
That is why you are seeing this sudden spike in 410 returns. While we believe the spike will settle down to some level (could be different for each app depending on various patterns), in general, ongoing, you may expect the 410 status rate somewhat higher than you may have observed before.
Argun Tekant / DTS Engineer / Core Technologies
