How to connect to SAP HANA using JDBC

Recently I had to connect a Java application to SAP HANA and I made some notes along the way: The first step is to get the SAP HANA JDBC driver, a file called ngdbc.jar. The quickest way is to download the SAP Hana Cloud Platform SDK from here: https://tools.hana.ondemand.com/#cloud Choose the latest “Java Web Tomcat 8”… Continue reading How to connect to SAP HANA using JDBC

Linear optimization with or-tools: containerizing a gunicorn web application

Previously, we left our app working with our local python+gunicorn+nginx installation. In order to get there we had to do quite a bit of configuration and if we wanted to deploy this in a server or send it to a friend, we would have to go through a very error-prone process subject to version changes… Continue reading Linear optimization with or-tools: containerizing a gunicorn web application

10 things I learned while setting up five masternodes

Over the past few weeks, I’ve been experimenting with masternodes as alternatives/replacements to traditional crypto mining rigs. Like with many other crypto-related things, I was surprised to find such a huge community and wealth of options. It’s akin to opening a window into another world. What interests me the most is to learn to what… Continue reading 10 things I learned while setting up five masternodes

Pentaho is slow for servers with too many home directories

Over the course of two years, browsing solutions on our Pentaho 5.4 server became progressively slow. It came to a point in which you had to wait 2-3 minutes to see the list of solutions in the Pentaho User Console. The catalina log didn’t say much and we didn’t have too many solutions (around 200),… Continue reading Pentaho is slow for servers with too many home directories