Enum JobRecoveryBehavior 

#[non_exhaustive]
pub enum JobRecoveryBehavior {
    FailAndRetryImmediately,
    FailAndRetryWithBackoff,
}

How to treat jobs which are already marked as running when the queue starts. This accounts for cases where the process is restarted unexpectedly.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

FailAndRetryImmediately

Mark the job as failed, and schedule the next try to run immediately. (Normal worker concurrency limits will still apply.)

FailAndRetryWithBackoff

Mark the job as failed, and schedule the next try to run with the normal retry backoff timing.