Policy: AWS > Well-Architected Tool > AWS Well-Architected Framework > Reliability > REL 05. How do you design interactions in a distributed system to mitigate or withstand failures? > Fail fast and limit queues

If the workload is unable to respond successfully to a request, then fail fast. This allows the releasing of resources associated with a request, and permits the service to recover if it’s running out of resources. If the workload is able to respond successfully but the rate of requests is too high, then use a queue to buffer requests instead. However, do not allow long queues that can result in serving stale requests that the client has already given up on.

See Fail fast and limit queues for more information.

Targets

This policy targets the following resource types:

AWS > Well-Architected Tool > AWS Well-Architected Framework

Primary Policy

This policy is used with the following primary policy:

AWS > Well-Architected Tool > AWS Well-Architected Framework > Reliability > REL 05. How do you design interactions in a distributed system to mitigate or withstand failures?

Controls

Setting this policy configures this control:

AWS > Well-Architected Tool > AWS Well-Architected Framework > Reliability > REL 05. How do you design interactions in a distributed system to mitigate or withstand failures?

Policy Specification

Schema Type	`string`
Default	`Skip`
Valid Values [YAML]	`Skip` `True` `False`

In Your Workspace

Policy Settings by Type report

Developers

Category URI

tmod:@turbot/turbot#/control/categories/other

Policy Type URI

tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast

GraphQL

query policyType(id: "tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast") { … }

query policySettings(filter: "policyTypeId:'tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast'") { … }

query policyValues(filter: "policyTypeId:'tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast'") { … }

CLI

Get Policy Type

turbot graphql policy-type --id "tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast"

Get Policy Settings

turbot graphql policy-settings --filter "policyTypeId:tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel05FailFast"