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Define Operationally Excellent Architectures

5.1 Choose design features in solutions that enable operational excellence.

  • metrics: latency, http, 4xx errors, 5xx errors, etc.
  • cloudwatch can give metrics on ec2 based on what we can measure
  • can't measure how much data you have stored on ebs volume - no metric
  • cloudwatch custom metrics - you can report your own metrics to cloudwatch then set alarms

Exam Questions

  • CodeDeploy: Amazon EC2, Fargate, lambda, on-prem servers

Infrastructure as Code

CloudFormation

  • Version your infrastructure

  • Applications can rely on specific changes to infrastructure

  • Branch your infastructure (e.g. git)

  • Work on multiple things concurrently

  • Run version 2 while working on version 3.

  • Audit changes

  • Traceability: who and why

AWS CodeCommit

Not on SA Associate - but on developer. Need to know codesuite.

  • Fully managed source control service
  • HA, durable
  • Encryption
  • IAM
  • No limit on repo size
  • Does it support LFS? Need to think about what LFS even is...

AWS CodeDeploy

  • Fully managed deployment services
  • Blue/Green Deployments
  • Deployment Health Tracking
  • Automatically rollback if failure is detected
  • Exam Question: Amazon EC2, Fargate, lambda, on-prem servers

AWS CodePipeline

  • We skipped over this, don't really need to know about it for this purpose.