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Lambda Exam Tips

  • Lambda scales out (not up) automatically
  • Lambda functions are independent, 1 event = 1 function
  • Lambda is serverless
  • Know what services are serverless
    • Lambda
    • API Gateway
    • S3
    • DynamoDB
    • Etc.
  • Lambda functions can trigger other lambda functions, 1 even can = x functions if function trigger other functions.
  • Architectures can get extremely complicated. AWS X-Ray allows you to debug what is happening.
  • Lambda can do things globally. You can use it to back up S3 buckets to other S3 buckets, etc.
  • Know your triggerss:
    • API Gateway
    • AWS IoT
    • CloudWatch Events
    • CloudWatch Logs
    • CodeCommit
    • Cognito Sync Trigger
    • DynamoDB
    • Kinesis
    • S3
    • SNS
    • SQS