Class SynchronizationRunBackoff

Namespace

MailFathom.Application.Synchronization

Assembly

MailFathom.Application.dll

Decides how long one account waits before its next synchronization run.

public static class SynchronizationRunBackoff

Inheritance

object

SynchronizationRunBackoff

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

This is run-level backoff, and it is a different decision from the operation-level retry an adapter's resilience pipeline performs. The pipeline decides whether one IMAP command is worth repeating; this decides whether a whole run is worth starting again yet. The two never wrap each other: a run that ended in failure has already spent its pipeline budget, so starting the next one on the ordinary interval would spend the same budget again against a server that has just refused it.

A successful run returns the account to its configured interval, so backoff never outlives the condition that caused it, and the delay is drawn from a range rather than computed exactly. Accounts that share a mail server fail together, and an exact delay would return every one of them to that server in the same instant on every later run.

Methods

DelayBeforeNextRun(TimeSpan, TimeSpan, int)

Computes the delay before one account's next synchronization run.