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Cristian Planas

@cplanas.bsky.social
282 followers 55 following 50 posts

Engineer & Rubyist. Speaker of tech stuff with a dubious sense of humour (www.rubyvideo.dev/speakers/cristian…). Author of Rails Scales! (t.co/g6sFeDDgp4). I lived around: BCN, HEL, CPH, SF, NYC. Currently @zendesk.

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Cristian Planas @cplanas.bsky.social · 05/07/2025
Just checked the "Best Sellers in Ruby Programming"(lnkd.in/gq4sKWkt) on Amazon and found a pleasant surprise!
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Cristian Planas @cplanas.bsky.social · 02/07/2025
After 3 years of work, my book Rails Scales! is finally complete, and the print copies are now available! I recorded a short unboxing video of my copies to share with you. You can get your own paperback copy of Rails Scales! on Amazon: www.amazon.com/Rails-Scales...
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Cristian Planas @cplanas.bsky.social · 16/05/2025
It's finally out! My talk "Full Circle: How Modern Ruby Powers the Re-integration of High-Speed Microservices into Rails". Recommended if you are into Ruby, architectural debates with some historical perspective, and mostly Twin Peaks. #ruby #rails www.youtube.com/watch?v=0cI8...
youtube.com
Cristian Planas (Engineer @Zendesk) - Full Circle... | Tropical on Rails 2025
YouTube video by Tropical on Rails
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Cristian Planas @cplanas.bsky.social · 26/04/2025
Rails Scales! is a Pragmatic Bookshelf best seller, and it’s for sale right now! 40% off with the code 2025RAILS at checkout! Use this opportunity and get your ebook copy. 😘 pragprog.com/titles/cprpo... #ruby #rails #rubyonrails
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The Pragmatic Bookshelf ✅ @pragprog.com · 25/04/2025
Spring Best Sellers Sale, Week 3 The Red Carpet - ♥️ Ruby/Rails♥️ 40% Off – This Week Only! Code: 2025RAILS at checkout pragprog.com/titles/... by @cplanas.bsky.social
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Cristian Planas @cplanas.bsky.social · 16/04/2025
Ready to go! Rocking my lucky T-shirt. #RubyKaigi
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Cristian Planas @cplanas.bsky.social · 15/04/2025
Best airport welcome ever for a Ruby conference! #ruby #rubykaigi
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Cristian Planas @cplanas.bsky.social · 15/04/2025
One of the perks of speaking in #RubyKaigi is that you get to visit Japan.
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Cristian Planas @cplanas.bsky.social · 08/04/2025
Amid the excitement of #TropicalOnRails, I forgot to share this: Rails Scales!—my upcoming book on Rails performance—has already sold 500+ copies in beta! And it’s not even officially out yet (launching May or June). Thanks to everyone reading early! pragprog.com/titles/cprpo...
pragprog.com
Rails Scales!
Build Rails applications that scale. Discover the small changes that make a big difference in efficiency. Design applications for performance from the start.
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Tropical on Rails @tropicalonrails.bsky.social · 04/04/2025
EN: On top of an amazing talk, @crplanas also brought a special treat for those of you who love a good read... 👇🏼💜 PT-BR: Além de uma palestra incrível @crplanas também trouxe uma oportunidade para vocês que adoram uma boa lekitura... 👇🏼💜
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Rosa @rosa.codes · 04/04/2025
Now we had @cplanas.bsky.social do a **super fun** and inspiring talk about going full cycle from microservices to monolith. Really great!! 🔝🔝
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Cristian Planas @cplanas.bsky.social · 29/03/2025
My book, “Rails Scales!” is already available for presale at Barnes & Noble. 😍 www.barnesandnoble.com/w/rails-scal...
barnesandnoble.com
Rails Scales!: Practical Techniques for Performance and Growth|Paperback
Rails doesn't scale. So say the naysayers. They’re wrong. Ruby on Rails runs some of the biggest sites in the world, impacting the lives of millions of users while efficiently crunching petabyte...
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Cristian Planas @cplanas.bsky.social · 26/02/2025
Yep! The book is completed. We hope to bring it to printing very soon!
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The Pragmatic Bookshelf ✅ @pragprog.com · 26/02/2025
Beta Update - Rails Scales! by Cristian Planas @cplanas.bsky.social pragprog.com/titles/cprpo B6.0 Release Notes: * Completed the chapter “Monitoring Performance to Build Scalable Systems”. * Completed the epilogue. * Book completed. (Already purchased? Check your email for a download link.)
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Balkan Ruby @balkanruby.bsky.social · 23/02/2025
As Eastern Europeans, we find the X leadership's stance on geopolitical issues troublesome. We don't want any part in that. Hello, Blue Sky #rubyfriends. ✌️
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Cristian Planas @cplanas.bsky.social · 16/02/2025
Just released a new version of Rails Scales! (pragprog.com/titles/cprpo...). This one includes the completed book. :) I'm currently working on the last revision, which updates the book from Rails 7 to 8. Mostly minor changes, with the exception that now I will cover Solid Queue.
pragprog.com
Rails Scales!
Build Rails applications that scale. Discover the small changes that make a big difference in efficiency. Design applications for performance from the start.
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Cristian Planas @cplanas.bsky.social · 13/02/2025
Looking forward to be in Sao Paulo this April. Obrigado!
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DilDog 🅅 @dildog.l0pht.com · 02/02/2025
CONNECTION

social media will connect people all over the world

“I hate you”

webcomicname.com
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Cristian Planas @cplanas.bsky.social · 24/01/2025
Hard week. In the world, and at work. This too shall pass.
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Cristian Planas @cplanas.bsky.social · 07/01/2025
New Year, new Ruby talks proposals... It's been a productive day, I already got 4 ready, haha.
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Gergely Orosz @gergely.pragmaticengineer.com · 04/01/2025
This is so spot on. Two things: 1. Being focused on producing output the fastest way possible means that you will never prioritize "going deep" 2. Going deep (and down the rabbit hole) is how you learn more: but you need to balance it. Figure out how to do both: it's tricky!
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Cristian Planas @cplanas.bsky.social · 17/12/2024
The Last Jedi is the 3rd best Star Wars movie. There, I said it.
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Cristian Planas @cplanas.bsky.social · 14/12/2024
Updating my book to Rails 8 (it was written with an example application written in 7) I found an unexpected difference. In Rails 8, the request logs do not show the amount of memory allocations. This was quite useful for the examples of the book. Any way to turn this back on?
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tef @tef.bsky.social · 02/12/2024
here's a computer take: it didn't actually take that much computing power to go to the moon
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Gergely Orosz @gergely.pragmaticengineer.com · 02/12/2024
There's this evergreen joke on software development that goes something like this: "We're done with 90% of the project. Which means we only have the other 90% left to go." It's funny because it's true. It's also why experienced engineers are in-demand: they are the "finishers." AI tools: not now.
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Cristian Planas @cplanas.bsky.social · 29/11/2024
My book "Rails Scales!" is currently discounted. The book is still on beta, but the manuscript is completed. You don't have much longer to get the beta!
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Honeybadger.io @honeybadger.io · 28/11/2024
Don’t forget to instrument your turkey for observability today. 📈 Happy Thanksgiving! blog.thermoworks.com/accurate-pro...
blog.thermoworks.com
Proper Probe Placement in Your Turkey
Temperature control is key to cooking a turkey, and it all starts with accurately placing your oven thermometer's probe.
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Cristian Planas @cplanas.bsky.social · 28/11/2024
Just finished writing my first book, Rails Scales! (pragprog.com/titles/cprpo...) Here is how it ends: "Scalability is also empowering humans to reach their full potential for creativity and innovation. Here's to the Ruby community, and to all the other fools who dream. Here's to the mess we make!"
pragprog.com
Rails Scales!
Build Rails applications that scale. Discover the small changes that make a big difference in efficiency. Design applications for performance from the start.
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Cristian Planas @cplanas.bsky.social · 26/11/2024
Posts like this make me realize how opinions in software architecture field have changed in the last years. From a software engineer at AirBnB: "a polished monolith would have served us far better than our sprawling service ecosystem. [...]Microservices made our system more complex and brittle."
bit.ly
Airbnb's Three Biggest Mistakes
This is the perspective of one lowly engineer who cared too much. For context, I spent 6 years at Airbnb from 2016 to 2022, first as a senior engineer, then an engineering manager and finally as a sta...
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Cristian Planas @cplanas.bsky.social · 23/11/2024
Most commonly discussed scaling issue on social media.
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The Pragmatic Bookshelf ✅ @pragprog.com · 19/11/2024
It's Black Friday time at Pragprog Just use coupon code turkeysale2024 at checkout and take 40% off (ONLY at pragprog.com) Everything we publish is on sale... including Beta Books!
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Cristian Planas @cplanas.bsky.social · 18/11/2024
Seeing that the new Mac Mini (which is receiving raving reviews) costs $599 in the US, but 719,00€ in Spain is... painful. And yes, I know that the sales tax is not included in the US price, but it's still way cheaper!
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Cristian Planas @cplanas.bsky.social · 18/11/2024
This week I am in Krakow, visiting the Zendesk office. DM me if you want to grab a coffee and chat about Ruby stuff (or something else!).
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Gergely Orosz @gergely.pragmaticengineer.com · 16/11/2024
As a developer: Bluesky is like the “good old” Twitter, before the API got taken away/locked down Eg you can access the “firehose!” Without having to pay $42K/month or more news.ycombinator.com/item?id=4215...
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Cristian Planas @cplanas.bsky.social · 10/11/2024
I'm also preparing my new talk. This one is about scalability and closely follows the approach of my book. It's also my craziest talk yet.
media.tenor.com
a man in a batman costume stands in front of a man in a green tuxedo
ALT: a man in a batman costume stands in front of a man in a green tuxedo
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Nony Dutton @nonster.bsky.social · 08/11/2024
Rails 8.0 hasn't even been out 24 hours and we're already running it in production at Zendesk. Tens of thousands of subdomains now powered by Rails 8.0. Just another humble entry into the "Does Ruby/Rails scale?" conversation. 💎🚆 #ruby #rails
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Cristian Planas @cplanas.bsky.social · 10/11/2024
Putting the final touches to my first book: pragprog.com/titles/cprpo.... I'll probably be done with the last chapter before the end of the month. #ruby #rails
pragprog.com
Rails Scales!
Build Rails applications that scale. Discover the small changes that make a big difference in efficiency. Design applications for performance from the start.
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