Author Archives: George Valentin Voina

Blog links: Blockchain news

By | February 8, 2017

Some interesting blockchain related resources from the internet: The Chain API (a very easy to use) blockchain infrastructure. One of the easiest to use library and with a nice written tutorial. So spin your blockchain network in minutes with it. See Chain tutorial and the API JavaDoc A nice article putting blockchain in the context… Read More »

Back-up your Google data

By | February 8, 2017

There is a new tool from Google available to all that want to keep a backup of their Google data. I know that Google means “free” mail and “free” cloud space for lots of you but for the faint hearted a backup is always welcome. If we look at the Yahoo issue (due to bad… Read More »

Windows finally has an OS in it

By | January 17, 2017

Starting with build 1607 finally Windows 10 has a Linux in it. To enable the Linux user space (basically an Ubuntu) the following has to be done: STEP 1: Update Windows to 1607 Make sure you update Windows 10 to a build at least 1607. STEP 2: Activate developer mode Settings -> Updates & security… Read More »

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 »

Storage: Optimize SSDs with fstrim

By | January 10, 2017

Using SSD drives is no longer an exception, they are used in home systems but also in server systems to hold at least the OS, or other resources that need more speed than space. As any other storage disk a SSD can become fragmented as successive write/delete operations will try to use the available storage.… Read More »