Featured Article

Support and see how the magic of this self hosted blog happens

By | August 23, 2021

There were so many times when I had to search for hours for a solution that looked trivial in the end when I found it explained by some stranger on a blog or forum. There are cases when after reading manuals, documents and forums there is still no clear solution and then I wish someone… Read More »

Learn #banking, #fintech and #payments jargon: Lombard Loan in RTGS

By | June 12, 2024

What is a Lombard Loan? The name ‘Lombard’ comes from a region in northern Italy. The Italian banking houses in the Lombardy Region had a rich history dating back to the Middle Ages. They are famous for first developing and popularizing the concept loaning money backed up by liquid assets. In RTGS context a Lombard… Read More »

State of consumer goods market post 2020 and a small list of tricks to get quality goods

By | May 21, 2024

I was looking for some time for a hair-dryer. No luck at start as retail stores and supermarkets are all flooded exclusively with low quality China made ones. Luck struck while on holiday. I always check stuff hotels use (usually they try to have high reliability appliances). To my surprise I found they had a… Read More »

Fedora Linux Server useful one liners -part 2

By | May 7, 2024

This is a continuation of the previous post about one liners from https://blog.voina.uk/fedora-linux-server-useful-one-liners/ Updating to a new version – extra commands In case the usual one liner does not work or there are some issues related to the upgrade, there are some additional things that can be done. Make sure to have latest packages of… Read More »

Fedora Linux Server useful one liners

By | April 10, 2024

While running the blog server on Fedora Linux I found out that some one liners are either very important to be executed once or very useful periodically. Here are some of my most used one-liners Updating packages Note that I allow dnf to skip broken packages and delete if necessary. Sometimes if using other than… Read More »

Monitor and control #ActiveMq using Jolokia #API

By | October 26, 2023

Apache ActiveMQ® is the most popular open source, multi-protocol, Java-based message broker. It is widely used in a lot of multi service application environments where we need to pass messages between services. All this type of environments (kubernets, docker swarm etc. ) are used to be able to monitor and control the component services using… Read More »

#Oracle # SQL Covert view to table issue: ORA-01723: zero-length columns are not allowed

By | July 31, 2023

In an Oracle database I was trying to convert an existing view to a table and preserve the data in it. For most of my views the following SQL worked perfectly: Then in one on the instances the following error occurred: While inspecting the SQL code of the views I noticed that the view with… Read More »

My #vintage #turntable set-up.

By | June 21, 2023

Several months ago I moved my childhood turntable setup to my new place. I will just post here some images of the set-up I like so much. Basically it was the standard turntable you could buy in the late 1980s in communist Romania. I remember that my dad bought it sometimes in 1983 or 1984.… Read More »

#Jboss: Data source connection optimizations

By | June 21, 2023

In a high load system deployed on Jboss Application Server the following optimizations for data source pool resources may be needed. 1. Change the minimum and maximum pool size of a data source (MyDS). This will ensure that we always have a minimum number of allocated connections and also we set a threshold to the… Read More »

Activate #infinispan second level cache with #jboss and #hibernate

By | November 23, 2022

Second level cache is an extremely powerful way to improve performance of an enterprise application if done right. In the following I will explain how to activate and configure second level cache when using Hibernate and Jboss 7.4+ application server. Jboss 7.4 comes with Infinispan as the build in second level cache solution. This makes… Read More »