middleware

type BackoffConfig struct {
	Strategy     BackoffStrategy
	BaseDelay    time.Duration
	MaxDelay     time.Duration
	JitterFactor float64
	Multiplier   float64
}

type BackoffStrategy int

type MetricsCollector interface {
	JobStarted(jobType, queue string)
	JobCompleted(jobType, queue string, duration time.Duration)
	JobFailed(jobType, queue string, duration time.Duration)
	JobRetrying(jobType, queue string, attempt int)
}

type PanicError struct {
	Value interface{}
}

type PermanentError struct {
	Err error
}

type RetryableError struct {
	Err error
}