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Requirement
Requirement [+]
Title | Quality of service |
Identifier | SWIM-SERV-014 |
Requirement | A service description shall include statements on the quality of service offered with regards to: - availability of the service;
- response time of the service; and
- throughput of the service.
|
Rationale | This is a key criterion in deciding to use the service. This is key information to be included in a service level agreement and will influence the content of the SLA. It informs contract negotiations between consumers and providers. |
Verification | Completeness: Verify that quality statements are included in the service description. Consistency: Not Applicable. Correctness: Not Applicable. |
Examples/Notes | Note: The availability is typically expressed as a percentage representing the ratio between minimum target uptime versus maximum uptime. The service provider needs to describe the service outages he intends to mask/alleviate. The availability information needs to be expressed for various situations, e.g. planned and unplanned outages. The service provider needs to describe the schedule of planned outages. Example of availability: ≥ 99.95 % of Continuous Operations. Note: The response time expressing the delay to process a service request could include: delay in seconds, percentage of messages, message size. Example of response time: 2s delay for 95% of messages of average size 1MB, with no compression. Example of response time: max 3s response to complete a service request, measured from the time the service provider agent receives the request to the time the service provider transmits the response. Note: The throughput is typically expressed as a number of service requests that the service can accommodate within the given time period. Example of throughput: 200 service requests per minute. Note: It is a good practice to describe the measuring conditions of the quality of service figures given. |
Level of Implementation | Mandatory |
Guidance
No guidance provided.