Lambda stuck on sending messages to SQS or upload files to S3 from time to time with no reason.

For some reason from time to time during last 2 weeks, while i was developing serverless solution, lambda become stuck on using aws-sdk v2 and aws-sdk v3.

It runы code before the moment it needs to send SQS message or upload json file to S3 and then stuck. When I used aws-sdk v2, I added a logger to it for debugging, during normal invocation it showed me that it sent it well (and some results), but when it stuck it doesnt return anything.

I tried to change lambda timeout to 6sec,10sec, 60 sec. It just run out of time without any errors. Once I redeploy it, it can start working again. (but in some cases it's not).

I also tried to create client outside of the handler, inside the handler. When I consoled log the client, I could see that it has an object.

Syntaxis:

in aws-sdk v2 I used

const sqs = new AWS.SQS({apiVersion: '2012-11-05'});
sqs.sendMessage(params).promise 

in aws-sdk v3 i use

sqsClient.send(
        new SendMessageCommand({ ...param })
      );

Can it be related to bad ENI or something ? Does anyone have any ideas on what can be the reason of that behaviour

• runtime: nodejs16.x.
• architecture: arm64