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>