Why has my subscription IDs stopped being automatically approved in the AWS SNS topic?

Question

Workato subscription IDs (Webhook URLs) are not getting auto approved at AWS SNS Topic, which caused data synchronization not to happen

Answer

Workato has a rate limit policy in place. You can find more details here if you'd like. ( https://docs.workato.com/troubleshooting/webhook-gateway-limits.html#rate-limits) Rate limits are applied on a workspace level. Our webhook gateway has the following limits:
 

• 72,000 events per hour
• 18,000 events in a burst

 
Our webhook gateway follows a leaky bucket approach with the following mechanics:
 

• You start with a burst allowance of 18,000 events.
• The hourly allowance of 72,000 events is amortized to 20 events per second. whereas we saw ~25k events / sec
• Events received each second use up the 20 events allowance.
• Exceeding 20 events per second consumes the burst allowance.
• Receiving fewer than 20 events per second adds to the burst allowance.
• Burst allowance can be up to 18,000 events.

If Workato notices the current implementation is not adhering to the above policy, it will halt subscription. 

Resources

https://support.workato.com/en/support/discussions/topics/1000086968

https://docs.workato.com/troubleshooting/webhook-gateway-limits.html#rate-limits