Policy: AWS > Well-Architected Tool > AWS Well-Architected Framework > Reliability > REL 04. How do you design interactions in a distributed system to prevent failures? > Do constant work

Systems can fail when there are large, rapid changes in load. For example, a health check system that monitors the health of thousands of servers should send the same size payload (a full snapshot of the current state) each time. Whether no servers are failing, or all of them, the health check system is doing constant work with no large, rapid changes.

See Do constant work 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 04. How do you design interactions in a distributed system to prevent failures?

Controls

Setting this policy configures this control:

AWS > Well-Architected Tool > AWS Well-Architected Framework > Reliability > REL 04. How do you design interactions in a distributed system to prevent 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/rel04ConstantWork

GraphQL

query policyType(id: "tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel04ConstantWork") { … }

query policySettings(filter: "policyTypeId:'tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel04ConstantWork'") { … }

query policyValues(filter: "policyTypeId:'tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel04ConstantWork'") { … }

CLI

Get Policy Type

turbot graphql policy-type --id "tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel04ConstantWork"

Get Policy Settings

turbot graphql policy-settings --filter "policyTypeId:tmod:@turbot/aws-wellarchitected-framework#/policy/types/rel04ConstantWork"