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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.

Issue 318 - Getting Rid of Unused Warnings with _

We sometimes are forced by the Java language to declare variables that we never use, attracting the ire of the javac compiler. Since Java 22 we have a way to declare these as "unnamed" by using an underscore.

Issue 317 - Explicit vs Diagnostic GC

How many times have we seen programmers call System.gc() to "help the garbage collector"? Unfortunately far too often, with potentially terrible performance implications. In this newsletter we explore the explicit and the diagnostic GC and how we can force a GC, even if explicit GCs are disabled.

Issue 316 - Code Before super() - JEP 447

Java 22 preview allows us to write code before the call to super(). There are restrictions. We are not allowed to refer to "this" in any way. We thus cannot set fields before calling the superclass constructor. But what if the superclass constructor calls our methods? In this newsletter we explore a workaround using ThreadLocals.


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50% Keyboard Guide: Tiny Typists' Delight

Posted by Hugh Jack on June 19, 2024 at 10:15am 0 Comments

Introduction to Compact Keyboards

Welcome to the world of compact keyboards! These small form factor keyboards are a game-changer when it comes to saving space and typing on the go. Whether you're a student, a professional, or a casual user, compact keyboards offer convenience and portability like never before.

What are Compact Keyboards?

Compact keyboards are smaller versions of traditional keyboards. They come in various…

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We have some exciting news to share with you. Otavio will be joining us to discuss the latest version of Camel in an exclusive presentation. Presentation Details: Speaker: Otavio Rodolfo Piske Topic:…

Posted by Michael Levin on September 2, 2023 at 9:21am 0 Comments

We have some exciting news to share with you. Otavio will be joining us to discuss the latest version of Camel in an exclusive presentation.

Presentation Details:

Speaker: Otavio Rodolfo Piske

Topic: Camel 4:What to Expect

Date: 07 September 2023

Time: 19:00 Ist Time

Duration: Approximately 1 hour

Register URL : https://www.eventbrite.com/e/700456483197

Presentation…

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How to Download Pinterest Videos

Posted by Maxwell Stone on September 1, 2023 at 11:34am 0 Comments

Pinterest has become a treasure trove of inspiration for millions of users around the world. Whether you're looking for recipe ideas, home decor inspiration, fashion tips, or DIY projects, Pinterest has it all. Among the countless pins and images that flood the platform, videos have emerged as an increasingly popular form of content. But what if you want to download Pinterest videos for offline viewing or to share with friends? In this article, we'll explore the world of Pinterest videos and…

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Next OJUG and GatorJUG Meetings will be fabulous - Check out the Codetown Events

Watch for details on our upcoming meetings. OrlandoJUG meeting's fall on the 4th Thursday of every month, in case you want to mark your calendars. Stay tuned for details! GatorJUG meets the 2nd Wednesday of every month.


The details are posted in the CodeTown Events section. Please RSVP so we'll know how much pizza to order. Stay tuned! ...Mike

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Be Careful What You Wish For 1 Reply

Interesting. Ask Elon Musk what scares him…Continue

Tags: Braintree, PayPal, kernal, google, neuralink

Started by Michael Levin in AI, ML & Big Data. Last reply by Michael Levin Oct 16, 2023.

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Haseeb Qureshi, notable App Academy graduate, cryptocurrency expert, and philanthropist will be giving a talk on Effective Altruism for App Academy students ...
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50% Keyboard Guide: Tiny Typists' Delight

Introduction to Compact KeyboardsWelcome to the world of compact keyboards! These small form factor keyboards are a game-changer when it comes to saving space and typing on the go. Whether you're a student, a professional, or a casual user, compact keyboards offer convenience and portability like never before.What are Compact Keyboards?Compact keyboards are smaller versions of traditional keyboards. They come in various sizes, but the main idea is to provide a keyboard that takes up less space…See More
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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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InfoQ Reading List

Article: Virtual Panel: How to Become a Principal Engineer

As a software engineer or individual contributor, the next step in your career can be to become a principal engineer. The path to becoming a principal engineer at companies can feel unclear, which can inhibit individual engineering careers. But that also provides opportunities for engineers to invent and shape the role of principal engineers.

By Ben Linders, Joy Ebertz, Pablo Fredrikson, Charlotte de Jong Schouwenburg

Presentation: Curating a Developer Experience - A Hands-on Guide for Platform Engineers

Andy Burgin explains what the customer experience team did in one of their projects, starting from scratch and how they have attained feedback with recommendations from across the business.

By Andy Burgin

Inside Netflix’s Distributed Counter: Scalable, Accurate, and Real-Time Counting at Global Scale

Netflix engineers recently published a deep dive into their Distributed Counter Abstraction, a scalable service designed to track user interactions, feature usage, and business performance metrics with low latency. The system balances performance, accuracy, and cost through configurable counting modes, resilient data aggregation, and a globally distributed architecture.

By Eran Stiller

Amazon S3 Introduces Metadata Feature for Improved Data Management and Querying in Preview

Amazon Web Services (AWS) has launched S3 Metadata, enhancing data management for S3 users. This new capability enables near real-time querying and analysis of S3 data via organized metadata updates. By adopting Apache Iceberg, it ensures interoperability and scalability, allowing businesses to efficiently leverage their data for analytics and AI applications.

By Steef-Jan Wiggers

QCon SF 2024: Refactoring Large, Stubborn Codebases

Jake Zimmerman, Technical Lead of Sorbet at Stripe, and Getty Ritter, Ruby Infrastructure Engineer at Stripe, presented Refactoring Stubborn, Legacy Codebases at the 2024 QCon San Francisco conference. Zimmerman and Ritter demonstrated how to fix complaints on maintaining a large codebase with leverage and by ratcheting incremental progress.

By Michael Redlich

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