AWS Elastic Load Balancing, Amazon CloudWatch and Auto Scaling

AWS Elastic Load Balancing Application load balance, 面向應用，外部：internet，內部：internal internet-facing (http/https) internal Network load balance，面向網絡，TCP，TLS 最好將Load Balance的DNS暴露給外部，而不是IP地址，因爲AWS可能會自動切換I

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