All Blog Posts (369)

GIS in the Cloud - the ESRI Example

Sunrise in the swamp

Great article here...

"Has your organization realized the potential of cloud computing yet? For users of geographic information system (GIS) technology, the cloud opens a number of new uses like weather forecasting, sales analysis, population…

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Added by Michael Levin on November 29, 2011 at 10:00am — No Comments

Codetown's Facebook page

Hey, everyone:

 

We have a Facebook page: http://www.facebook.com/codetown - if you haven't joined yet, please do. We'll post events, links to articles and discussions on Codetown and also links to articles outside the group, like this:

So, once you like the Facebook page, you'll get a stream of updates from…

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Added by Michael Levin on November 24, 2011 at 9:33am — No Comments

Opening Call for Proposal - RubyConf India 2012

This just in from Satish N Kota of the Bangalore RUG: 

 

"Hello Folks,





Lets begin the begin and in that spirit, call for talk proposals is

open for RubyConf India 2012. Interested folks can head over to:…



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Added by Michael Levin on November 24, 2011 at 9:21am — No Comments

Mike Levin ::: Java Champion

Mike has been elected Java Champion!

http://blogs.oracle.com/java/entry/new_java_champion_michael_levin

Added by Michael Levin on November 21, 2011 at 12:40pm — 4 Comments

Objective C and Android

Here is a link to a presentation I put together for compiling Objective C using the Android NDK. Maybe someone will find it interesting...

 

Added by Jackie Gleason on November 20, 2011 at 1:27pm — No Comments

***Free*** Hudson book

Interested in Hudson? (or in finding out what it is) - check out this free book! Thanks to Frans Thamura all the way from Java,…

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Added by Michael Levin on November 15, 2011 at 8:40am — No Comments

No Flash for Mobile

Details here.

 

Additional details:

 …

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Added by Michael Levin on November 10, 2011 at 10:00am — No Comments

Ensemble - now called Juju, Ubuntu's Cloud

Ensemble: service orchestration for the cloud (my work for Ubuntu Server)  - via Jim Baker

Jim and I spent some time…

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Added by Michael Levin on October 30, 2011 at 5:30pm — 2 Comments

OrlandoJUG October Open Spaces Meeting Rocked!

OrlandoJUG Oct 2011 meeting

We had a great time at the OrlandoJUG meeting tonight. It was an Open Spaces style meeting and a potluck dinner. We had some new faces and certainly covered interesting topics. Here are a few:

1. Cloud Computing

2. JavaOne 2011

3. Managing dev, test and production environments

4. OSGi - what it is and how…

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Added by Michael Levin on October 27, 2011 at 11:11pm — No Comments

It's all about Yandda! (an Android app)

It was in February this year that i sent this mail to a friend of mine:

 

from Buls Yusuf …
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Added by Bulama Yusuf on October 26, 2011 at 11:24am — No Comments

Good times at JCertif in the Congo

JCertif ::: in Brazzaville, Republic of Congo



Let me indulge with this photo...it was such a great time at the first JCertif and you know, you have a chance coming up in just 11 months to be a part of it again! www.jcertif.com has all the details. Check out some of the African JUGs on Codetown while you're at it.… Continue

Added by Michael Levin on October 25, 2011 at 8:00pm — No Comments

Dennis Ritchie has Died

Dennis Ritchie has died. Dennis was known as the father of the C programming language and the Unix… Continue

Added by Michael Levin on October 25, 2011 at 10:30am — No Comments

Take a peek under the covers of a website

Here's a website with open source code:

 

A cheap replacement for ching(6)

ching(6), the old amusement found in BSD 4.[234], has disappeared from the face of the net. I wanted it back. Fortunately finding the full text of the Wilhelm translation of the I Ching was easy. So was writing a program to read it.…

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Added by Michael Levin on October 9, 2011 at 2:00pm — No Comments

Oracle Certified Associate, Java SE 5/SE 6 Preparation Article

Oracle offers variety of Java Certifications for all Java Editions (Java SE, Java EE and Java ME).  Oracle Certified Associate, Java SE 5/SE 6 (Formerly Sun Certified Java Associate (SCJA) ) certification provides basic knowledge required to manage a Java project.

 

What exam I need to pass to achieve OCA for Java SE 6 Certification?



You need to complete 1Z0-850 – Java Standard Edition 5 and 6, Certified Associate Exam to…

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Added by Treacy Jane on September 30, 2011 at 6:11am — No Comments

Internet Marketing

Internet Marketing (Search Engine Optimization (SEO) and Email Marketing) articles.

Added by Treacy Jane on September 28, 2011 at 9:11am — No Comments

Online Exam and Certification Preparation

You can find out articles about online exam and certification preparation

Added by Treacy Jane on September 28, 2011 at 9:07am — No Comments

GroovyFX, Getting started.

Dean Iverson and I have been working on an open source project called GroovyFX that provides a Groovy binding that sits on the new JavaFX 2.0 platform.  Dean has written a good blog on how to get started with GroovyFX here. It is already a little dated, but if you ignore the JavaFX build numbers and just download the…

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Added by Jim Clarke on September 27, 2011 at 4:51pm — No Comments

New Quartz-2.1.0 and MySchedule-2.1.2 release is out

Hi there,

 

I have couple announcements.

 

First: Do you need Java scheduling? How about try out an easy web based UI with Quartz!

Both myschedule-2.1.2 (for Quartz-2.1.0) and myschedule-1.5.2(for Quartz-1.8.5) releases are available for download here: http://code.google.com/p/myschedule/downloads/list



I have fixed few bugs and improved the UI slightly. Both of these releases should…

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Added by Zemian Deng on September 25, 2011 at 10:24am — No Comments

Overview of the JCertif 2011 conference from The Republic of Congo

Here's a recap of what happened at the JCertif 2011 conference in Brazzaville from Chrisobel Malonga:

 

"Hello with all, I take a few minutes in order to announce to you how much JCertif 2011 of which you are the actors at summer a true success and a true human adventure which was worth the cost d' to be lived. My arrival on the spot dated August 27 m' allowed…

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Added by Michael Levin on September 19, 2011 at 8:30pm — No Comments

JCertif Congo photos!

Looks like Max uploaded some photos! Check 'em out here. All the best, Mike - see ya at the OrlandoJUG… Continue

Added by Michael Levin on September 15, 2011 at 8:28am — 2 Comments

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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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InfoQ Reading List

Presentation: When Every Bit Counts: How Valkey Rebuilt Its Hashtable for Modern Hardware

Madelyn Olson discusses the evolution of Valkey's data structures, moving away from "textbook" pointer-chasing HashMaps to more cache-aware designs. She explains the implementation of "Swedish" tables to maximize memory density. She shares insights on systems intuition, memory prefetching, and the rigorous testing needed for mission-critical caches.

By Madelyn Olson

Istio Evolves for the AI Era with Multicluster, Ambient Mode, and Inference Capabilities

The Cloud Native Computing Foundation (CNCF) has announced a major evolution of Istio, introducing new capabilities aimed at making service meshes “future-ready” for AI-driven workloads.

By Craig Risi

Article: Bloom Filters: Theory, Engineering Trade‑offs, and Implementation in Go

This article walks you through the Go implementation of Bloom filters to optimize the performance of a recommender. It cover the architectural view, Bloom filter mechanics, Go integration, parameter tuning, and practical lessons learned from making it work under production constraints.

By Gabor Koos

Google Open Sources Experimental Multi-Agent Orchestration Testbed Scion

Designed to manage concurrent agents running in containers across local and remote compute, Scion is an experimental orchestration testbed that enables developers to run groups of specialized agents with isolated identities, credentials, and shared workspaces.

By Sergio De Simone

Anthropic Accidentally Exposes Claude Code Source via npm Source Map File

Anthropic's Claude Code CLI had its full TypeScript source exposed after a source map file was accidentally included in version 2.1.88 of its npm package. The 512,000-line codebase was archived to GitHub within hours. Anthropic called it a packaging error caused by human error. The leak revealed unreleased features, internal model codenames, and multi-agent orchestration architecture.

By Steef-Jan Wiggers

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