CODEWITHSUNDEEP
aws-lambdaconcurrencyaws-event-bridge
Adrian Hoffman
Adrian Hoffman

Reputation: 321

Aws Lambda multiple concurrencies from 1 eventbridge timer

Good afternoon,

I have an aws eventbridge timer that triggers an aws lambda every 15 minutes. The lambda takes at most 30 seconds to execute, doesn't go over memory allotment, has a 5 minute timeout, is set for zero retries, has 100% success over the past several hours.

However aws is still running at least 8 and up to 36 instances of this lambda concurrently. I have no idea what is triggering these additional concurrencies. Nothing is outlined in the cloudwatch logs, the eventbridge timer is saying it only triggers once.

Where can I find out what/why these additional instances are getting triggered concurrently?

Upvotes: 3

Views: 1166

Answers (1)

Adrian Hoffman
Adrian Hoffman

Reputation: 321

I had overlooked that I had a double definition for the event to fire in my cdk stack. Copy and paste error from the example docs. DOH

Rule rule = new Rule(this, this.Node.TryGetContext("eventName").ToString(), new RuleProps
            {
                Enabled = false,
                //bad pattern
                //EventPattern = new EventPattern
                //{
                //    Source = new[] { "aws.ec2" }
                //},
                Schedule = Schedule.Rate(Duration.Minutes(15)),
                RuleName = this.Node.TryGetContext("eventName").ToString()
            }) ;

Upvotes: 1

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