Talks on xdg.me

Supercharging MongoDB Atlas Data Lake (MongoDB World)

xdg@xdg.me (David Golden) — Wed, 08 Jun 2022 00:00:00 +0000

Original abstract

Data Lake Storage (DLS) is a new, managed data service that automatically optimizes your ingested data for lightning-fast analytic queries.

Join MongoDB staff engineer David Golden as he explains how we built DLS and why it improves query performance. We’ll cover how DLS ingests, partitions, and automatically rebalances your data. We’ll explain how this works in concert with our new metadata catalog to optimize query planning. And we’ll describe the asynchronous workflow underneath it all that seamlessly recovers from outages to keep your data safe.

Slice Recycling Performance and Pitfalls (GothamGo)

xdg@xdg.me (David Golden) — Fri, 12 Apr 2019 00:00:00 +0000

Original abstract

When you drink a soda, do you recycle the can? When you allocate a slice, do you recycle the memory? Recycling cans is good for the planet and recycling slices can be good for your program. But how? The garbage collector? A sync.Pool? Something else? You’ll be surprised what a difference it makes!

Sample code

https://github.com/xdg-go/zzz-slice-recycling

Safer Chainsaw Juggling (TPC)

xdg@xdg.me (David Golden) — Tue, 19 Jun 2018 00:00:00 +0000

(Lightning talk)

Original abstract

At YAPC::NA 2015, I gave a talk comparing MongoDB to Perl as another Swiss-Army chainsaw. This year, I’ll give a chronology of changes that make MongoDB less likely to take your leg off.

Taking Perl to Eleven With Higher-Order Functions (TPC)

xdg@xdg.me (David Golden) — Mon, 18 Jun 2018 00:00:00 +0000

Original abstract

Sometimes, you just need your Perl to go one higher. This talk will teach you how to use functions that return functions for powerful, succinct solutions to some repetitive coding problems. Along the way, you’ll see concrete examples using higher-order Perl to generate declarative, structured “fake” data for testing.

How I Get to the ☞ (TPC)

xdg@xdg.me (David Golden) — Tue, 20 Jun 2017 00:00:00 +0000

(Lightning talk)

Original abstract

How I stitch together apps, RSS, and web services to trickle out interesting articles I’ve read to Twitter.

Real World Optimization (TPC)

xdg@xdg.me (David Golden) — Mon, 19 Jun 2017 00:00:00 +0000

Original abstract

This case study gives an inside look at optimization of the MongoDB Perl driver, including custom benchmarking tools, step-by-step changes and results that will surprise and amaze. If you ever needed to optimize some Perl and wondered how people go about it, this talk is for you.

One BSON to Rule Them (NYPM)

xdg@xdg.me (David Golden) — Thu, 08 Dec 2016 00:00:00 +0000

Original abstract

David Golden will talk about his work on “BSON”, a Perl module and a binary encoded data format used by MongoDB, and the challenge of serializing strongly-typed data into and out of Perl.

IsTrue(true)? (YAPC)

xdg@xdg.me (David Golden) — Wed, 22 Jun 2016 00:00:00 +0000

Original abstract

Is up down? Is black white? Is true false? In one very surprising case, yes!

In the video below, my part starts around 57:52.

Practical Consistency (YAPC)

xdg@xdg.me (David Golden) — Tue, 21 Jun 2016 00:00:00 +0000

Original abstract

Distributed database consistency is a jargon-filled tarpit - of great interest to theorists but misunderstood or ignored by developers. But it doesn’t have to be. What if you had a simple mental model for reasoning about consistency? What if you had simple rules of thumb for making the right tradeoffs in your applications? MongoDB staff engineer David Golden will share ideas for practical consistency and demonstrate how to achieve it with the MongoDB Perl driver.

Smokin' Git Rebase (DCBPW)

xdg@xdg.me (David Golden) — Sat, 16 Apr 2016 00:00:00 +0000

Original abstract

This lightning talk will show you why and how to smoke test your git rebase. Git rebase is a great tool, but you lose confidence in having tested every commit once you rewrite them. This talk shows a clever way to smoke test during the rebase itself, so you can stop and fix any failures as you go.

Details of the technique

The slides are a bit useless without audio/video, but the key technique is on pages 22-24 and repeated here:

Juggling Chainsaws (YAPC)

xdg@xdg.me (David Golden) — Wed, 10 Jun 2015 00:00:00 +0000

Original abstract

Perl and MongoDB both embody the twin ideals of whipuptitude and manipulexity. Both have wildly enthusiastic communities. Both are regularly reviled by outsiders. What happens when we bring them together? No children, trees or animals will be harmed during this talk.

Make Comments Stand Out (YAPC)

xdg@xdg.me (David Golden) — Mon, 08 Jun 2015 00:00:00 +0000

Original abstract

Most syntax highlighters get comment coloring wrong.

In the video below, my part starts around 27:57.

State of the Velociraptor Mini-Keynote (YAPC)

xdg@xdg.me (David Golden) — Mon, 08 Jun 2015 00:00:00 +0000

Abstract

In 2015, the Perl “State of the Velociraptor” keynote was delivered as a series of lightning talks by community members. I was asked to speak about the Perl Toolchain and the Perl QA Hackathon. I covered the CPAN River and the Berlin Consensus recommendations for CPAN Standards of Care.

Unfortunately, the video is a recording of a live-streamed broadcast and is a bit choppy. If the video doesn’t automatically start at my portion, I start at 25:18.

Adventures in Optimization (NYPM)

xdg@xdg.me (David Golden) — Wed, 30 Jul 2014 00:00:00 +0000

Original abstract

What makes your code slow? How do you make it faster? And how do you prove it?

This talk will describe my adventures benchmarking and optimizing ordered hashes in Perl, culminating in the release of Hash::Ordered — which outperforms all other CPAN alternatives, often by a substantial margin. We will cover:

How to customize Benchmark.pm
How and why to benchmark at different scales
Why tied anything in Perl is a horrible idea
How ordered hashes got faster from a simple algorithm change

Cooking Perl With Chef (OSCON)

xdg@xdg.me (David Golden) — Thu, 19 Jul 2012 00:00:00 +0000

Original abstract

Reliable and scalable applications need repeatable, automatable application deployment. Configuration management tools like Chef, Puppet and others make it easy to deploy an entire application stack, but support for Perl applications has lagged behind other popular, dynamic languages.

Face it: Perl application deployment is complex. Can you redeploy your application if your server fails? Can you replicate the application on another server to scale horizontally? Can you do it quickly and error-free? Will it have the exact same version of Perl and all necessary CPAN modules? Are you sure?

Acme::Tiny (Perl Seminar NY)

xdg@xdg.me (David Golden) — Tue, 16 Nov 2010 00:00:00 +0000

This talk introduced an evening of lighting talks about CPAN “Tiny” modules.

Free QA! (OSCON)

xdg@xdg.me (David Golden) — Thu, 22 Jul 2010 00:00:00 +0000

Original Abstract

Did you know that CPAN comes with a free QA team? CPAN Testers is a distributed, grass-roots project with over 6.5 million test reports. This talk describes how the project benefits Perl developers and offers four important practices for any large-scale, volunteer QA effort

If you’ve heard of Perl, you’ve probably heard of CPAN. But did you know that CPAN comes with a free QA team? CPAN Testers is a large-scale, distributed, grass-roots project to continuously collect and syndicate Perl library tests from over 80 different platforms and every version of Perl since 5.6.

Perl 5 Version 13 (OSCON)

xdg@xdg.me (David Golden) — Thu, 22 Jul 2010 00:00:00 +0000

This lightning talk described work in progress on Perl 5 Version 13.

CPAN Testers++ (Perl Seminar NY)

xdg@xdg.me (David Golden) — Tue, 18 May 2010 00:00:00 +0000

This talk summarizes changes in progress to the CPAN Testers project.

Quality Hacking in Birmingham (Perl Seminar NY)

xdg@xdg.me (David Golden) — Tue, 19 May 2009 00:00:00 +0000

This talk summarizes my experience at the second Perl QA Hackathon in Birmingham, UK.

Hackers Gone Wild: Spring Break in Oslo (Perl Seminar NY)

xdg@xdg.me (David Golden) — Tue, 20 May 2008 00:00:00 +0000

This talk summarizes my experience at the first Perl QA Hackathon in Oslo, Norway.

Vanilla Perl (Perl Seminar NY)

xdg@xdg.me (David Golden) — Tue, 17 Oct 2006 00:00:00 +0000

This talk describes the origins of Vanilla Perl and my work creating Strawberry Perl.

Eversion 101: Inside Out Objects (YAPC)

xdg@xdg.me (David Golden) — Mon, 26 Jun 2006 00:00:00 +0000

Original abstract

Inside-out objects offer intriguing advantages over traditional Perl objects, but at the cost of substantial complexity. This talk reviews pros and cons of inside-out objects and teaches the basics of how they work. It includes three core concepts, four ways to make them and five pitfalls to avoid. Familiarity with traditional object-oriented Perl will be assumed.

Previously given at

Perl Seminar NY, January 2006
Boston.pm, June 2006

Pod::WikiDoc (YAPC)

xdg@xdg.me (David Golden) — Mon, 26 Jun 2006 00:00:00 +0000

This lightning talk described an alternative ‘dialect’ of POD.