Elastic Load Balancing | Application Load Balancer Pricing Flashcards

1
Q

Am I charged for regional AWS data-transfer when I enable cross-zone load balancing in Application Load Balancer?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

No, you are not charged for regional data transfer between Availability Zones when you enable cross-zone load balancing for your Application Load Balancer.

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2
Q

How does Application Load Balancer pricing work?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

You are charged for each hour or partial hour that an Application Load Balancer is running and the number of Load Balancer Capacity Units (LCU) used per hour.

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3
Q

What is a Load Balancer Capacity Unit (LCU)?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

An LCU is a new metric for determining how you pay for an Application Load Balancer. An LCU defines the maximum resource consumed in any one of the dimensions (new connections, active connections, bandwidth and rule evaluations) the Application Load Balancer processes your traffic.

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4
Q

Will I be billed on Classic Load Balancers by LCU?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

No, Classic Load Balancers will continue to be billed for bandwidth and hourly usage.

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5
Q

How do I know the number of LCUs an Application Load Balancer is using?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

We expose the usage of all four dimensions that constitute an LCU via CloudWatch.

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6
Q

Will I be billed on all the dimensions in an LCU?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

No. The number of LCUs per hour will be determined based on maximum resource consumed amongst the four dimensions that constitutes a LCU.

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7
Q

Will I be billed on partial LCUs?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

Yes.

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8
Q

Is a free tier offered on an Application Load Balancer for new AWS accounts?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

Yes. For new AWS accounts, a free tier for an Application Load Balancer offers 750 hours and 15 LCUs. This free tier offer is only available to new AWS customers, and is available for 12 months following your AWS sign-up date.

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9
Q

Can I use a combination of Application Load Balancer and Classic Load Balancer as part of my free tier?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

Yes. You can use both Classic and Application Load Balancers for 15GB and 15 LCUs respectively. The 750 load balancer hours are shared between both Classic and Application Load Balancers.

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10
Q

What are rule evaluations?

Application Load Balancer Pricing

Elastic Load Balancing | Compute

A

Rule evaluations are defined as the product of number of rules processed and the request rate averaged over an hour.

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