Module backoff 

How long the pipeline waits before trying again. Generic scheduling math; which error codes are even retryable is super::classification.

Constants

JITTER_MAX

NOT_REGISTERED_REIMPORT_ADMIN_THRESHOLD

How many times Suotar may lose a submission (notRegistered) before a human looks. Each one still resubmits.

PARTIAL_REGISTRATION_ADMIN_AFTER

How long verify may see only the assessment item attainment before a human looks.

RESOLVING_RECOVERY_GRACE

A row still resolving_enrolment this long belongs to a worker that died mid-call, and goes back to ready_to_submit; a parked row’s claimed check expires after as long. Above the resolve timeout, and restarted before each resent half of a split batch, so a live answer still lands.

SUBMITTING_RECOVERY_GRACE

A row still submitting this long belongs to a worker that died mid-call. Above the import timeout, so a live request is never condemned to submission_uncertain.

SUBMIT_BASE_BACKOFF

SUBMIT_MAX_BACKOFF

SUBMIT_MAX_RETRY_AGE

After this long in failure a row stops being retried and becomes a support case.

SUOTAR_PENDING_WINDOW

Suotar’s PENDING_WINDOW_MS: how long it holds a submission it has not yet seen in Sisu as pending. Within it, a second import of the same completion can slip past Suotar’s duplicate check.

UNCERTAIN_ADMIN_AFTER

How long after the submission a human is asked to look in Sisu, well past the hour an attainment may take to show up. The row still never resubmits.

UNCERTAIN_MAX_RECHECK

UNCERTAIN_RECHECK

The first wait before looking for an attainment we may or may not have created; it doubles after every fruitless look.

VERIFY_BASE_BACKOFF

VERIFY_DENSE_WINDOW_END 🔒

VERIFY_GIVE_UP_POLL

VERIFY_LATE_WINDOW_INTERVAL 🔒

VERIFY_MAX_AGE

After this, polling drops to daily and a human looks. Never a failure: the attainment may exist, and calling it failed would invite a second submission.

VERIFY_MAX_BACKOFF

VERIFY_WINDOW_END 🔒

VERIFY_WINDOW_INTERVAL

VERIFY_WINDOW_START 🔒

Registrations land between about 5 and 29 hours after the submission, most of them in the first half: polls start shortly before, are close together through the dense part, and back off after.

Functions

doubling 🔒

next_attempt_at

Spreads a batch that failed together, so it does not come back as one thundering herd.

submit_backoff

The wait before the next submit after retry_count failed ones.

submit_window_expired

uncertain_needs_admin

Whether an uncertain submission has waited long enough to be handed to an admin; never without a submission time.

uncertain_recheck_delay

lookup_count counts the look just made, so the wait after the first one is already doubled.

verify_delay

The wait from now until the next verify poll of a row submitted at submitted_at. Timed from the submission rather than by counting polls, so a resumed or delayed row still polls at the times registrations land.

verify_window_expired