NAME

Plack::Middleware::ServerTiming - Performance metrics in Server-Timing header

SYNOPSIS

use Plack::Builder;

builder {
    enable 'ServerTiming';
    sub {
        my $env = shift;
        sleep 1;
        push @{$env->{'psgix.server-timing'}}, ['miss'];
        push @{$env->{'psgix.server-timing'}}, ['sleep', {dur => 1000, desc => 'Sleep one second...'}];
        [200, ['Content-Type','text/html'], ["OK"]];
    };
};

DESCRIPTION

Plack::Middleware::ServerTiming is middleware to add Server-Timing header on your response. You may set psgix.server-timing environment value to specify name, duration and description as metrics.

ENVIRONMENT VALUE

psgix.server-timing

$env->{'psgix.server-timing'} = [
    [$name],
    [$name, {dur => $duration}],
    [$name, {desc => $description}],
    [$name, {dur => $duration, desc => $description}],
];

SEE ALSO

https://www.w3.org/TR/server-timing/

LICENSE

Copyright (C) Takumi Akiyama.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

Takumi Akiyama <t.akiym@gmail.com>