AWS 弹性负载均衡器 - 实例优先级
AWS Elastic Load Balancer - instances priority
我正在阅读 AWS_Blue_Green_Deployments 论文 here,并试图理解接下来的内容:
When it’s time to deploy, you simply attach the
green group to the existing load balancer to introduce traffic to the new
environment. For HTTP/HTTPS listeners, the load balancer favors the green
Auto Scaling group because it uses a least outstanding requests routing
algorithm, as explained in the Elastic Load Balancing Developer Guide.
不幸的是 - 我在 Elastic Load Balancing 开发人员指南 here.[=14 中看不到解释(或者 - 只是无法理解) =]
谁能解释一下这部分:
the load balancer favors the green Auto Scaling group because it uses a least outstanding requests routing algorithm
为什么ELB会偏爱新挂载的ASG流量?什么是“最不突出的请求路由算法”here/in AWS?
最近重构了 ELB 文档,引入了 ELB-V2,称为 Application Load Balancer。以前的产品现在称为经典。文档中似乎没有明确引用您要查找的短语,但考虑一下:
By default, a Classic Load Balancer routes each request independently to the registered instance with the smallest load.
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html
"least outstanding requests routing algorithm" 是一种算法,它通过选择当时未完成(待处理、未完成)请求数量最少的实例来选择哪个实例接收下一个请求。
由于新添加的实例最初不会处理任何请求,因此在它们的工作负载接近已经主动处理请求的实例的工作负载之前,它们将非常适合新请求。空闲(未充分利用)的实例在负载平衡之前受到青睐,此时所有实例都将被平等对待。
我正在阅读 AWS_Blue_Green_Deployments 论文 here,并试图理解接下来的内容:
When it’s time to deploy, you simply attach the green group to the existing load balancer to introduce traffic to the new environment. For HTTP/HTTPS listeners, the load balancer favors the green Auto Scaling group because it uses a least outstanding requests routing algorithm, as explained in the Elastic Load Balancing Developer Guide.
不幸的是 - 我在 Elastic Load Balancing 开发人员指南 here.[=14 中看不到解释(或者 - 只是无法理解) =]
谁能解释一下这部分:
the load balancer favors the green Auto Scaling group because it uses a least outstanding requests routing algorithm
为什么ELB会偏爱新挂载的ASG流量?什么是“最不突出的请求路由算法”here/in AWS?
最近重构了 ELB 文档,引入了 ELB-V2,称为 Application Load Balancer。以前的产品现在称为经典。文档中似乎没有明确引用您要查找的短语,但考虑一下:
By default, a Classic Load Balancer routes each request independently to the registered instance with the smallest load.
http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-sticky-sessions.html
"least outstanding requests routing algorithm" 是一种算法,它通过选择当时未完成(待处理、未完成)请求数量最少的实例来选择哪个实例接收下一个请求。
由于新添加的实例最初不会处理任何请求,因此在它们的工作负载接近已经主动处理请求的实例的工作负载之前,它们将非常适合新请求。空闲(未充分利用)的实例在负载平衡之前受到青睐,此时所有实例都将被平等对待。