This post is more like a personal note of the resources indicated by Balaji as a must read if you want to start the journey of understanding crypto currencies and the underlying technology. Mastering Bitcoin Mastering Bitcoin is a book for developers, although the first two chapters cover bitcoin at a level that is also… Read More »
Starting from 9th of June 2021 #Bitcoin is legal tender in #ElSalvador. This has major world wide consequences and bellow are my takes on this. No country can tax profits from selling #Bitcoin as is no longer an “asset” but a currency. Remember #XRP issues with this topic. The Federal Reserve is investigating Ripple company,… Read More »
Oracle 11g database with Data Guard active. A switch of the sites (from production to disaster recovery node) is done and all seems good. Suddenly one day after the switch (more than one month) the enterprise application using it cannot connect any-more (connection pool getting filled up). The underlying issue that causes this is reported… Read More »
One of the most annoying issues you can have in your network setup is when a router dies. I am a fan of Ubiquity EdgeRouters but they suffer from one annoying issue. Sometimes due to power issues the USB stick that acts as a storage media gets corrupted or dies. In the following I will… Read More »
Now that the Evergreen ship is finally freed and the coffee and toilet paper crises is no longer at the horizon we can marvel at how the Internet turns every bad thing into a meme. Here is my the best of Evergreen meme collection.
I was trying to obtain the last executed query on an Oracle instance. Seems easy but I wanted also: to exclude the queries that are done by sys user as maintenance to focus on queries executed by a specific client type. The best way to do it is to use the V$SQLAREA system table. V$SQLAREA… Read More »
After some updates suddenly all the post I shared from Jetpack for WordPress had no valid Twitter card. After some mail exchanges with Jetpack support they assured me that all is good from their part. As instructed by them I was able to see that indeed Jetpack was correctly generating the Twitter Card. Still checking… Read More »
The new webp image standard is used a lot this days. Somehow Nautilius is not generating thumbnails for this format automatically. To add support for this just do the following: STEP 1: Add support for the new image format. Create a new file /usr/share/thumbnailers/webp.thumbnailer with the following content. Also make sure totem player is installed,… Read More »
Swift MT and ISO messages are the basic message formats used all across the financial world in most of the payment systems. Yes there are notable exceptions like NACHA or some country specific message formats but if you need to interface with or implement some payment system that at some point connects to SWIFT you… Read More »
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 »