Author Archives: George Valentin Voina

Glassfish MQ: Secure, database backed GlassFish MQ for high volume applications

By | February 8, 2017

GlassFish MQ is a very powerful messaging server solution if correctly configured. By default the MQ server is defined to store the content of queues on files on disk, is accessible through insecure connections and has lots of limitations for message size or number of consumers/producers associated with a queue. This default setup is OK… Read More: Glassfish MQ: Secure, database backed GlassFish MQ for high volume… »

Backup: Daily back-up on external encrypted disk with rsync and cron

By | February 8, 2017

Everybody knows the importance of a daily back-up. There are a lot of tools with fancy GUIs and useless information but sometimes the best is to keep it simple. Linux offers some very powerful build-in ways of creating a perfect backup. The scope is to create a secure incremental automatic daily backup without using fancy… Read More: Backup: Daily back-up on external encrypted disk with rsync and… »

Blog Links: The ripple effect of virtual assistants and inteligent houses

By | January 12, 2017

The ripple effect of virtual assistants is something that appeared as an idea in a lot of SF movies. Think about Terminator or A.I. where we see this kind of ripple effect that starts from one A. I. and then ripples through all the A.I.s like a wave and washed everything including the human civilization.… Read More: Blog Links: The ripple effect of virtual assistants and inteligent… »

A.I. : State-of-the-art of Computer Vision

By | May 12, 2025

In another life (almost 14 years ago) for some years I had the privilege to be a member of one of the top European computer vision groups VISICS/PSI VISICS/PSI. My focus then was object categorization using neural networks, not a very popular topic at that time due to limitations in data availability and computation power.… Read More: A.I. : State-of-the-art of Computer Vision »

DB2 : Errors when a database nickname or view is no longer available

By | February 8, 2017

In an enterprise application based on hibernate running over DB2 we have to refer with several views and nicknames to external tables. This can be the case when SSO is used or there are some common static data (accounts, user entries, financial constants etc. ) that are kept in a centralized database repository and are… Read More: DB2 : Errors when a database nickname or view is… »

EdgeRouter: UBNT releases fix for firmware 1.9 that broke my l2tp/ipsec

By | December 31, 2016

That warm feeling that you contributed to the community when you find your bug report in an official release notes 🙂 There is a new firmware release EdgeRouter ER-8/ERPro-8/EP-R8: Firmware v1.9.1 that reports as fixed an issue first reported by me for the 1.9 firmware. The issue was reported in the thread Update to 1.9… Read More: EdgeRouter: UBNT releases fix for firmware 1.9 that broke my… »