Durian watch olympics == Ideal weekend 😋

Slides from my JVM Language Summit 2024 talk “20 Years of JRuby” are now posted! Videos will be published soon, so I hear. It was great to be back in the room with so many people smarter than me and torture them with Ruby implementation challenges. speakerdeck.com/headius/20-y…

Good read on Amazon's Exabyte-Scale Migration from Apache Spark to Ray on Amazon EC2 aws.amazon.com/blogs/opensou… via @awscloud

Want to learn how database locks actually work? Check out this incredibly thorough review by database legend Goetz Graefe, which dives deep into how databases use locks to protect your data and the integrity of your transactions. One of the most interesting distinctions in this paper is between locks and latches. Locks provide concurrency control between transactions--they're heavyweight, are meant to be held for a long time, and support complex scheduling and deadlock detection policies. However, as a result, they're expensive to acquire and release, requiring thousands of CPU cycles. By contrast, latches protect individual data structures from concurrent accesses by different threads/processes. They're lightweight (tens of CPU cycles per acquire/release), are held only while the data structure is being read or updated, and have minimal scheduling or deadlock detection capabilities and thus must be used very carefully. You might grab a latch before physically modifying a B-tree page in memory to ensure no one else concurrently writes to that page.

A thread of the coolest things you didn't know about the 2024 Paris Olympics 1. Olympians who win a medal will take home a real piece of the Eiffel Tower. Fragments of iron that were removed & preserved during renovations to the Eiffel Tower during the 20th century have been infused into the medals. Each medal includes 18 grams (0.04 pounds) of the Eiffel iron.

Throwback to @reddotrubyconf 2015 which also had the last instalment of @railsgirls by @lindaliukas, cc @suuuuengch

My current collection of @reddotrubyconf Tshirts. From left to right: 2015, 2016, 2017, 2024 😍 Thanks again to the organisers for bringing it back!

Thread of the coolest photos of the Moon 🧵 1. Paris' Arc de Triomphe by Stefano Zanarello

And that's a wrap. With 78 attendees from 12 countries, 16 speakers and 18 volunteers, we are grateful for seeing you all in Singapore to share our love for Ruby. Till next year!

Next up, looking forward to the Olympics for the weekend 🎉

Advent of Code 2023 - Day 5 is hard. Here is what it looks like reddit.com/r/adventofcode/co… adventofcode.com/2023/day/5 #AdventOfCode