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lib/Algorithm/Backoff/LIMD.pm  view on Meta::CPAN

package Algorithm::Backoff::LIMD;

use strict;
use warnings;

use parent qw(Algorithm::Backoff);

our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY
our $DATE = '2024-02-24'; # DATE
our $DIST = 'Algorithm-Backoff'; # DIST
our $VERSION = '0.010'; # VERSION

our %SPEC;

$SPEC{new} = {
    v => 1.1,
    is_class_meth => 1,
    is_func => 0,
    args => {
        %Algorithm::Backoff::attr_consider_actual_delay,
        %Algorithm::Backoff::attr_max_actual_duration,
        %Algorithm::Backoff::attr_max_attempts,
        %Algorithm::Backoff::attr_jitter_factor,
        %Algorithm::Backoff::attr_max_delay,
        %Algorithm::Backoff::attr_min_delay,
        %Algorithm::Backoff::attr_initial_delay,
        %Algorithm::Backoff::attr_delay_increment_on_failure,
        %Algorithm::Backoff::attr_delay_multiple_on_success,
    },
    result_naked => 1,
    result => {
        schema => 'obj*',
    },
};

sub _success {
    my ($self, $timestamp) = @_;

    unless (defined $self->{_prev_delay}) {
        return $self->{_prev_delay} = $self->{initial_delay};
    }

    my $delay = $self->{_prev_delay} * $self->{delay_multiple_on_success};

    $delay;
}

sub _failure {
    my ($self, $timestamp) = @_;

    unless (defined $self->{_prev_delay}) {
        return $self->{_prev_delay} = $self->{initial_delay};
    }

    my $delay = $self->{_prev_delay} + $self->{delay_increment_on_failure};

    $delay;
}

1;
# ABSTRACT: Linear Increment, Multiplicative Decrement (LIMD) backoff

__END__

=pod