App-AlgorithmBackoffUtils

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README  view on Meta::CPAN

        avoid so-called "thundering herd" problem.

        The jitter will be applied to delay on failure as well as on
        success.

    *   logs* => *array[str]*

        List of failures or successes.

        A list of 0's (to signify failure) or 1's (to signify success). Each
        failure/success can be followed by ":TIMESTAMP" (unix epoch) or
        ":+SECS" (number of seconds after the previous log), or the current
        timestamp will be assumed. Examples:

         0 0 0 0 0 0 0 0 0 0 1 1 1 1 1

        (10 failures followed by 5 successes).

         0 0:+2 0:+4 0:+6 1

        (4 failures, 2 seconds apart, followed by immediate success.)

lib/App/AlgorithmBackoffUtils.pm  view on Meta::CPAN

            summary => 'List of failures or successes',
            schema => ['array*', of=>'str*', 'x.perl.coerce_rules'=>['From_str::comma_sep']],
            'x.name.is_plural' => 1,
            'x.name.singular' => 'log',
            req => 1,
            pos => 0,
            slurpy => 1,
            description => <<'_',

A list of 0's (to signify failure) or 1's (to signify success). Each
failure/success can be followed by `:TIMESTAMP` (unix epoch) or `:+SECS` (number
of seconds after the previous log), or the current timestamp will be assumed.
Examples:

    0 0 0 0 0 0 0 0 0 0 1 1 1 1 1

(10 failures followed by 5 successes).

    0 0:+2 0:+4 0:+6 1

(4 failures, 2 seconds apart, followed by immediate success.)

lib/App/AlgorithmBackoffUtils.pm  view on Meta::CPAN

(1+jitter_factor). Jitters are usually added to avoid so-called "thundering
herd" problem.

The jitter will be applied to delay on failure as well as on success.

=item * B<logs>* => I<array[str]>

List of failures or successes.

A list of 0's (to signify failure) or 1's (to signify success). Each
failure/success can be followed by C<:TIMESTAMP> (unix epoch) or C<:+SECS> (number
of seconds after the previous log), or the current timestamp will be assumed.
Examples:

 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1

(10 failures followed by 5 successes).

 0 0:+2 0:+4 0:+6 1

(4 failures, 2 seconds apart, followed by immediate success.)

script/show-backoff-delays  view on Meta::CPAN

Valid values:

 ["Constant","Exponential","Fibonacci","LILD","LIMD","MILD","MIMD"]

=item B<--log>=I<s@>*

List of failures or successes.

A list of 0's (to signify failure) or 1's (to signify success). Each
failure/success can be followed by `:TIMESTAMP` (unix epoch) or `:+SECS` (number
of seconds after the previous log), or the current timestamp will be assumed.
Examples:

    0 0 0 0 0 0 0 0 0 0 1 1 1 1 1

(10 failures followed by 5 successes).

    0 0:+2 0:+4 0:+6 1

(4 failures, 2 seconds apart, followed by immediate success.)