Originally published at Perl Weekly 732
Hi there,
MetaCPAN‘s recent battle against mounting traffic abuse stands as a powerful testament to the resilience and ingenuity of openâsource infrastructure teams. After enduring recurring 503 outages that jeopardized service for Perl hackers worldwide, the MetaCPAN team embarked on a disciplined, dataâdriven counterattack. What began with rudimentary logs, robots.txt tweaks and manual IP bans evolved into a robust partnership with Datadog and Fastly, enabling realâtime visibility and proactive defense. With the deployment of sophisticated rateâlimiting rules, userâagent filtering, nextâgeneration WAF protections and a dynamic challenge system, MetaCPAN has successfully blocked some 80âŻpercent of malicious trafficâincluding AI scrapersâwhile delivering a steady, reliable experience to legitimate users. This journey highlights how transparency, layered defense and smart automation can transform a crisis into an opportunity for stronger, more sustainable service.
Mark Gardnerâs return to technical blogging marks a welcome revival of one of Perlâs clearest and most thoughtful voices.
Robert Acock created a mobile app, Heaven Vs Hell, written using react native and backend API’s in Mojolicious. You can find it in Google Play and App Store.
Enjoy rest of the newsletter.
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Your editor: Mohammad Sajid Anwar.
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Articles
MetaCPAN’s Traffic Crisis: An Eventual Success Story
MetaCPAN.org, the essential search engine for Perlâs CPAN repository has faced months of severe traffic issues that brought the service to its knees with frequent 503 errors.
The mobile app written using react native and backend API’s using Mojolicious.
Lightweight object-oriented Perl scripts: From modulinos to moodulinos
In Moodulinos, Mark Gardner offers a concise yet instructive journey through modern, lightweight Perl scripting by combining the time-tested modulino pattern with the expressive power of Moo.
Re: Wired on Perl and the virtue of humility
In his thoughtful response to Samuel Arbesmanâs Wired piece, Mark Gardner reframes the conversation around Perl.
Discussion
Is it still worth adding installation instructions to a distribution?
This post is a thoughtful prompt for Perl developers maintaining CPAN modules.
The Weekly Challenge
The Weekly Challenge by Mohammad Sajid Anwar will help you step out of your comfort-zone. You can even win prize money of $50 by participating in the weekly challenge. We pick one champion at the end of the month from among all of the contributors during the month, thanks to the sponsor Lance Wicks.
Welcome to a new week with a couple of fun tasks “Straight Line” and “Duplicate Zeros”. If you are new to the weekly challenge then why not join us and have fun every week. For more information, please read the FAQ.
RECAP – The Weekly Challenge – 332
Enjoy a quick recap of last week’s contributions by Team PWC dealing with the “Binary Date” and “Odd Letters” tasks in Perl and Raku. You will find plenty of solutions to keep you busy.
Both solutions are compact and idiomatic Perl, ideal for scripting and competitive programming.
A technically sound and idiomatic Raku solution with solid input handling, effective use of Rakuâs expressive syntax, and clean logic.
Odd last date letters, binary word list buddy
The solutions are terse, elegant, and showcase modern Perl idioms. They shine in clarity for those familiar with Perl 5.42+, especially with sprintf and all.
Perl Weekly Challenge: Week 332
The Raku version shows off the expressive power of high-level language features (like Bag and junctions) in a tight one-liner. The Perl version is longer but more transparent to a general audience, especially Perl learners.
A technically impressive post. Task 1 is robust and production-ready. Task 2 is a brilliant regex stunt â best appreciated as a learning artifact.
A well-executed and educationally valuable post. It demonstrates strong language fluency and a commitment to practical polyglot coding. Both Raku and SQL solutions are standout examples of expressive minimalism, while PL/Java and Python offer accessible, mainstream approaches.
is well-written, robust and idiomatic Perl. Task 1 stands out for its thorough validation and error handling. Task 2 is concise and logically correct.
The post is a well-structured, technically sound and Perl-fluent exploration of the weekly challenge. It not only solves both tasks concisely but also offers insight into language features, performance trade-offs and idiomatic Perl practices.
Accurate and efficient solutions in Perl, Raku, Python, and Elixir. Demonstrates strong understanding of each languageâs syntax and standard libraries. Clear separation of concerns and well-structured code snippets.
A strong, idiomatic Perl solution to both problemsâoptimized, correct and pleasantly readable. This write-up reflects deep Perl familiarity and attention to corner cases.
These are technically solid, idiomatic and well-documented. It balances clarity, efficiency and modern Perl features effectively.
The post delivers a compact and well-structured solution set, with a focus on language expressiveness, functional style and algorithmic clarity. It’s especially valuable for readers interested in cross-language comparisons rather than Perl-only perspectives.
It delivers solid, minimal and idiomatic solutions in both Python and Perl. The implementations are exactly in line with typical weekly challenge style: clean, correct and easily accessible to other coders.
It is engaging, technically sound and reflects a solid grasp of Rakuâs expressive features, especially hyper operators and Bags.
Rakudo
Weekly collections
Great CPAN modules released last week.
Events
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(C) Copyright Gabor Szabo
The articles are copyright the respective authors.
GĂĄbor SzabĂł | Sciencx (2025-08-04T05:23:57+00:00) Perl đȘ Weekly #732 – MetaCPAN Success Story. Retrieved from https://www.scien.cx/2025/08/04/perl-%f0%9f%90%aa-weekly-732-metacpan-success-story/
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