Backoff patterns

Questions

This is the requirement from the CDR Register Standards on GitHub around Backoff Patterns.

Which ADR end point(s) are to be polled when ADR is unavailable?

What is the specific end point to notify ADR authorisation withdrawal process post recovery?

Is there any guidance from CDR Standards on what should happen if the retry period is exceeded both for Short Term and Long Term Backoff pattern?

The expiry for Long Term Polling is 7 days, but what is the expiry period defined for Short Term Polling? Can you please advise?

Answers

1. Which ADR end point(s) are to be polled when ADR is unavailable? 

The availability requirements are described at: https://cdr-register.github.io/register/#data-recipient-unavailable
The polling mechanism is used to provide resilience in the notification of withdrawal of consent from the Data Holder to the Data Recipient. Only the endpoints used in facilitating withdrawal of consent from Data Holders to Data Recipients need to be polled.

2. What is the specific end point to notify ADR authorisation withdrawal process post recovery? 

From November 2020, the CDR Arrangement Revocation Endpoint must be called through this polling process to facilitate this withdrawal. Please refer to: https://consumerdatastandardsaustralia.github.io/standards/#end-points

3. Is there any guidance from CDR Standards on what should happen if the retry period is exceeded both for Short Term and Long Term Backoff pattern?

Once these retry periods have been exceeded, the data holder and data recipient are no longer in sync with their records of consent agreements. Data recipients should anticipate this scenario and provide sufficient error handling for the consumer. Explicit recommendations are still forthcoming and we are tracking this work in https://github.com/cdr-register/register/issues/156

4. The expiry for Long Term Polling is 7 days, but what is the expiry period defined for Short Term Polling? Can you please advise?

The Short Term Polling retry period is 10 minutes. 

See CDR Register: Back-off Patterns