UUID in Perl

Production-ready implementation guide with CSPRNG-backed code snippets.

Generate UUID in Perl

UUID generation in Perl using the Data::UUID CPAN module — battle-tested and widely deployed.

Implementation Code

Production Ready

perl snippet

use strict;
use warnings;
use Data::UUID;

my $ug = Data::UUID->new;

# Generate a UUID v4 string
my $uuid = $ug->create_str;
print "$uuid\n";

# Generate multiple
for (1..5) {
    print $ug->create_str, "\n";
}

Explanation

Data::UUID is the standard CPAN module for UUID generation in Perl. create_str() returns a UUID as a formatted string (e.g. 550e8400-e29b-41d4-a716-446655440000). Use create() for a binary representation.

Output Example

7f3c2a1b-9d4e-4f8a-b5c6-3e2d1f0a9b8c

Best Practice

Reuse the Data::UUID object across calls rather than creating a new instance each time. For web apps, consider UUID::Tiny as a pure-Perl alternative with no XS dependency.

Performance

Good. Data::UUID is XS-based (C extension) so it's fast. Suitable for high-volume ID generation in Perl services.

Installation

cpan Data::UUID

Or via system package manager: apt install libdata-uuid-perl

Security

Uses OS-level entropy sources. Suitable for non-security-critical identifiers. For session tokens, prefer a dedicated CSPRNG source.