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Handbook of Sustainable Design of Digital Services

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Backend    ODD#9     ODD#12     ODD#13    

Does service availability require redundancy ?

Recommendation 

Performance

C People

B Planet

B Prosperity

Difficulty

**

Priority

High

Récurrence

OnUpdate

Tests

Is the SLA defined?

Precisions

Redundancy makes it possible to guarantee a high level of service. This solution however requires a considerable duplication of physical equipment, networks and storage. This fault tolerance is sometimes justified by the functionality of the service, and sometimes goes beyond the requirements. Adapting the level of service and the need for the service allows the environmental impact to be reduced.

Use Case

Risks assessment

Additional elements

Operational issues related to the project

Posts

Rule for assessing the level of compliance of the criterion

Formalized = 100 ; Planned = 75 ; Identified = 50 ; Ignored = 0 / 100

Life cycle

Déploiement

16 other criteria related to the recommendation: Use the technical components that improve the sustainable IT aspects, security and performance

Recommendation Essential

Quality

Is the documentation of the functionality available to enable its reuse ?

Recommendation

Architecture

Do interactions between components benefit from caching mechanisms ?

Recommendation

Data processing

Are temporary files included in the "logrotate" ?

Advice

Data processing

Is the level of logs adapted to the environment ?

Recommendation

security

Is the security implemented justified with regard to the operations carried out ?

Advice

security

Are the versions of the components used tracked and deployed ?

Advice

Architecture

Is an Open Source solution available for the functional need ?

Advice

Architecture

Is there a lighter framework / library that meets the functional need ?

Recommendation

Architecture

Are the browser caches not being blocked by the framework or technology used ?

Advice

Performance

Is the web server used asynchronous and multi-threaded ?

Advice

Performance

Is a VM necessary as opposed to a container solution ?

Recommendation

Performance

Are unused resources freed up as quickly as possible ?

Advice

Performance

Has the integration of asynchronous processing been evaluated ?

Advice

Performance

Is the user informed of a processing in progress in the background ?

Advice

Performance

Can dependencies be reduced by using an alternative component ?

Advice

Performance

Has the dependency tree of the integrated components been evaluated ?