Codetown ::: a software developer's community
May 28, 2015 from 6pm to 9pm – Canvs This month, we welcome Ken Krueger for a talk on Spring Boot. Ken was here last year and that's the picture of our group that night. Meeting Overview: This session will introduce Spring Boot, discus… Organized by Michael Levin | Type: meeting
June 25, 2015 from 6pm to 9pm – Canvs This month we'll meet again at Canvs. We had a fantastic time last month. Ken Krueger gave a great presentation on Spring Boot. Several new folks showed up. What a super venue. I wrote up a littl… Organized by Michael Levin | Type: meeting
September 24, 2015 from 6pm to 8pm – Canvs This month we'll have a presentation on the Google Web Toolkit! Google Web Toolkit (GWT), used by Google internally on some of their biggest applications, is growing and quite good. Learn about the… Organized by Michael Levin | Type: meeting
October 22, 2015 from 6pm to 8pm – Canvs Hello OrlandoJUG! This month I will be in San Francisco for Java One, Oracle's annual Java conference. Fortunately, Alex Buckles and Gregg Groves will be here to lead the meeting. Thanks, guys! Our t… Organized by Alex Buckles & Greg Groves | Type: meeting
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Codetown is a social network. It's got blogs, forums, groups, personal pages and more! You might think of Codetown as a funky camper van with lots of compartments for your stuff and a great multimedia system, too! Best of all, Codetown has room for all of your friends.
Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.
Check out the Codetown Jobs group.

Pinterest Engineering cut Apache Spark out-of-memory failures by 96% using improved observability, configuration tuning, and automatic memory retries. Staged rollout, dashboards, and proactive memory adjustments stabilized data pipelines, reduced manual intervention, and lowered operational overhead across tens of thousands of daily jobs.
By Leela Kumili
Franka Passing discusses the architectural shift of Duolingo’s 500+ backend services to Kubernetes. She explains the move toward GitOps with Argo CD, the transition to IPv6-only pods, and the "cellular architecture" used to isolate environments. She shares "reports from the trenches" on managing developer trust, navigating AWS rate limits, and productionizing early adopter services.
By Franka Passing
How can you focus in a sea of results from a large regression test suite? This article describes a stochastic approach that relies on some degree of redundancy in your CI regression test set. This approach does not guarantee you will catch every bug every time, but it gives you your best bet of not missing the subtle signatures of all the bugs uncovered by your CI regression test suite runs.
By James Bornefelt WestfallIn this episode, Thomas Betts and Adi Polak talk about the need for context engineering when interacting with LLMs and designing agentic systems. Prompt engineering techniques work with a stateless approach, while context engineering allows AI systems to be stateful.
By Adi Polak
A 600-run benchmark by Ruby committer Yusuke Endoh tested Claude Code across 13 languages, implementing a simplified Git. Ruby, Python, and JavaScript were the fastest and cheapest, at $0.36- $0.39 per run. Statistically typed languages cost 1.4-2.6x more. Adding type checkers to dynamic languages imposed 1.6-3.2x slowdowns. Full dataset available on GitHub.
By Steef-Jan Wiggers
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