JEE Town

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JEE Town

Here's your Java Enterprise Edition group. JEE powers distributed software.

Members: 28
Latest Activity: Dec 11, 2012

Discussion Forum

LinkedIn has a good Java Group and a JEE Framewrk Article...

Started by Michael Levin Dec 11, 2012.

Notes from JCertif, in Brazzaville, Republic of Congo

Started by Michael Levin Aug 28, 2010.

JCertif is on! Rockin' in the Congo...

Started by Michael Levin Aug 25, 2010.

JEE Town Reading List ::: from JavaSpecialists

Issue 321 - StampedLock ReadWriteLock Dangers

ReentrantReadWriteLock has a limit of 65536 concurrent read locks. That is an unattainable number with platform threads, but definitely achievable with virtual threads. In this newsletter we explore some of the issues if we want to switch to the StampedLock.asReadWriteLock() instead.

Issue 320 - Please Don't Yield A Lot

Java's Thread.yield() traditionally would cause a voluntary context switch. However, with virtual threads, it causes the thread to be unmounted from its carrier thread. This can greatly increase the user and system time for ALL the carrier threads. And there is no way to turn it off. Keep an eye out for yield in your thread dumps.

Issue 319 - ArrayBlockingQueue: Weakly Consistent Iteration Powered by Weak References

Like many other concurrent collections, the ArrayBlockingQueue sports a weakly-consistent iterator. However, the ArrayBlockingQueue always has a maximum capacity, the length of the underlying array. In this newsletter we explore what happens to pending iterators when we wrap around the circular array.

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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.

When you create a profile for yourself you get a personal page automatically. That's where you can be creative and do your own thing. People who want to get to know you will click on your name or picture and…
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Created by Michael Levin Dec 18, 2008 at 6:56pm. Last updated by Michael Levin May 4, 2018.

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InfoQ Reading List

AWS Reduces Latency and Costs for Key/Value Datastores with AZ Affinity Routing and GLIDE Valkey

AWS recently introduced Availability Zone (AZ) awareness in version 1.2 of the open source Valkey General Language Independent Driver for Enterprise (GLIDE) client library. By implementing AZ affinity routing in the open source key/value datastore, developers can reduce latency and costs by directing requests to replicas within the same AZ as the client.

By Renato Losio

Uber's Cloud Journey: Embracing ARM in an x86 World

Uber embarked on a strategic migration from on-premise data centers to Oracle Cloud Infrastructure (OCI) and Google Cloud Platform in February 2023. A key component of this migration was integrating ARM-based computers into their predominantly x86 fleet to reduce costs, improve price performance, and ensure hardware flexibility amid supply chain uncertainties.

By Claudio Masolo

Google Gemini's Long-term Memory Vulnerable to a Kind of Phishing Attack

AI security hacker Johann Rehberger described a prompt injection attack against Google Gemini able to modify its long-term memories using a technique he calls delayed tool invocation. The researcher described the attack as a sort of social engineering/phishing attack triggered by the user interacting with a malicious document.

By Sergio De Simone

Azure AI Agent Service Now in Public Preview for Developers in AI Foundry SDK and Portal

Introducing the Azure AI Agent Service: a groundbreaking platform that empowers developers to design, deploy, and manage intelligent AI agents seamlessly integrated within the Microsoft ecosystem. Automate tasks, access real-time data, and monitor performance, all while benefiting from easy setup and advanced orchestration. Transform your business with AI-driven efficiency and innovation.

By Steef-Jan Wiggers

.NET MAUI Community Toolkit Adds .NET 9, Offline Speech Recognition

Between December 2024 and January 2025, Microsoft released versions 10.0.0 and 11.0.0 of their open-source .NET MAUI Community Toolkit. The new versions add .NET 9 support and offline speech recognition to the toolkit. Many small updates and bug fixes are also released with the toolkit.

By Edin Kapić

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