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RequestLimitExceeded exceptions in error logs

See original GitHub issue

I’m seeing a large number of RequestLimitExceeded exceptions in the logs. Here is an example:

Trace: RequestLimitExceeded: Request limit exceeded.
    at Request.extractError (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/services/ec2.js:50:35)
    at Request.callListeners (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at Request.emit (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/request.js:688:14)
    at Request.transition (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/request.js:690:12)
    at Request.callListeners (/home/vbarsegyan/former2/cli/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
  code: 'RequestLimitExceeded',
  time: 2020-08-19T10:01:39.095Z,
  requestId: 'e617cd80-eee2-4021-a1db-7e97ab982bb4',
  statusCode: 503,
  retryable: true
}

There is some inconsistency in the number resources that are being generated at every run. I ran node /former2/cli/main.js generate --region us-east-1 --output-terraform /tmp/backup.tf once a day for 6 days in a row and the files sizes varied as follows: 1.4MB, 459KB, 526KB, 556KB, 529KB, 440KB. Is this inconsistency somehow tied to the AWS request limit? If so, would it be possible to limit the number asynchronous API requests such that all resources are captured at every run?

Reference: https://github.com/iann0036/former2/issues/86 (thanks again!)