Limits

These are the bounds the service enforces today. They are engineering bounds rather than plan limits, and they can change while the alpha runs.

What	Bound
Schedule data	65,536 bytes, as serialized UTF-8 JSON
One-shot delaySeconds	1 to 158,000,000 seconds
Recurring everySeconds	60 to 31,536,000 seconds
Delivery attempts per occurrence	8, including the first
Idempotency-Key receipt	honoured for 86,400 seconds
Occurrence and attempt history	kept for 2,592,000 seconds
Callback request body a receiver must accept	up to 69,632 bytes
delivery.maxDurationSeconds	up to 86,400 seconds