Codetown
Codetown ::: a software developer's community
Kotlin Thursdays
Kotlin is a statically-typed language that runs on the JVM. Developed by a small JetBrains team in St. Petersburg, Kotlin is one of the hottest upcoming languages being used around the world. We're here to grow together as an open-source community and to learn collaboratively!
Crowdsourcing Kotlin-focused Tutorials
From content on the Kotlin language itself to programming paradigms to frameworks, we encourage anyone to submit content on anything Kotlin related. Our goal is learn collaboratively, meaning that the Kotlin Thursdays team is ready to help you submit content to share with others.
How do Kotlin Thursdays work?
Every Thursday, we release new content every season. We have blogs available here in KotlinTown. This season, we're creating webisodes to compliment that content. Code and documentation related to content is available on Github.
Interested in contributing? Head over Github to learn how you can get started :)
Happy 10th year, JCertif!
Notes
Welcome to Codetown!
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.
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Check out the Codetown Jobs group.
InfoQ Reading List
Discord Engineers Add Distributed Tracing to Elixir's Actor Model Without Performance Penalty
Discord engineering detailed how they added distributed tracing to Elixir's actor model. Their custom Transport library wraps messages with trace context and uses dynamic sampling to handle million-user fanouts. CPU optimizations included skipping unsampled traces and filtering context before deserialization, recovering 10+ percentage points of overhead.
By Steef-Jan WiggersHashiCorp Vault 1.21 Brings SPIFFE Authentication, Granular Secret Recovery, and More
HashiCorp has released Vault 1.21. This version introduces native SPIFFE authentication for non-human workloads, expands the granular secret recovery model introduced in Vault 1.20, and adds KV v2 secret attribution, MFA TOTP self-enrollment, a Vault Secrets Operator CSI driver that mounts secrets directly into pods without persisting them in etcd, and more.
By Diogo Carleto"Pick and Mix" Custom Regions: Cloudflare Introduces Fine-Grained Data Residency Control
Cloudflare recently introduced Custom Regions, an expansion of its Regional Services that lets customers precisely define where their data is processed. By selecting specific groups of data centers by country or region, customers can ensure that TLS termination and application-layer processing remain within chosen geographic boundaries for compliance and control.
By Renato LosioExperimental Web Install API Seeks to Improve Application Discovery and Distribution
The new, experimental Web Install API is now in Origin Trial in Microsoft Edge and Chrome. The API allows developers to programmatically trigger a PWA installation prompt from in-app user interactions. The API aims to simplify software discovery and distribution, particularly for users who are unaware of the install icon in the browser’s address bar or do not typically use app stores.
By Bruno CouriolQCon London 2026: AI Agents Write Your Code. What’s Left For Humans?
Hannah Foxwell began her QCon London 2026 talk by noting that the long-sought velocity in development has arrived, but the industry is unsure how to use it. She set aside the technical details of agentic coding, focusing instead on its implications for the people working with these systems.
By Matt Saunders
© 2026 Created by Michael Levin.
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