Lost Requests for api EC2 with ALB


I have api EC2 server and Application Load Balancer. In ALB make Deregistration delay (draining interval): 300 Seconds. And I have issue in api and lost requests. Is this the cause?

  • 300 Seconds Deregistration delay (draining interval) is normal or must decrease

  • Or the cause is Web request body inspection is 16kb for WAF in Cloudfront.

1 Answer


Deregistration delay is a parameter that specifies the period during which new requests will not be accepted when an instance is removed from a target group.
Therefore, it is unlikely that requests will be terminated even if this setting value is changed.

Is it possible that the ALB timeout is related?

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answered a month ago

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