Background Back in high school, I went through almost an entire book on C++. It was extremely interesting but the things I created were always command-line applications and – never once in my life – I’ve built a C++ application with a GUI, even the simplest one. It just seemed to be too much of…
At Appliscale we respect knowledge sharing and are passionate about new technologies. One day we were thinking – why not share tech news in newsletter form? By that time we were often discussing interesting news in our chats and at Weekly Knowledge Sharing meetings, but it’s impossible to keep track of everything. Newsletters would allow…
Amazon Redshift – data warehouse solution from AWS – configured as a cluster can be set up in many ways using different types and counts of underlying nodes. While designing any database solution, storage is one of the most important factors. In this article, I would like to describe how to save on Redshift’s space…
Amazon Redshift is a well-known data warehouse solution with PostgreSQL background. Definitely, it may even be your first choice for Big Data management in the cloud. However, do you know all the possibilities that it brings? In this article, I would like to describe how to improve the way your database is queried in order…
AWS ECS, which stands for Elastic Container Service is an orchestration tool for containerized workloads in the AWS cloud. At the moment of writing, ECS is almost 5 years old so the core functionality of the service is familiar to the cloud community. The auto-scaling of this service could be sometimes not straightforward. However, recent…
To write [marble tests], or not to write, that is the question. Every Software Developer should know the right answer. Tests are our safeguard in case of human errors. The Holy Grail of a working software. The key here is to write accurate tests. The ones that will check (almost) every possible scenario. This is…
Next up in our series of developer tools is JMap. There are plenty of errors or issues that might go wrong with your Java application, but there is one that happens more often than others – OutOfMemoryError, related to Java objects memory issues. Once your application throws one of these, your first target is Java…
There are a lot of different Linux tools that can be used to profile and instrument executables. Some of them are non-intrusive and do not require any modification of our source code or build process, even sometimes do not introduce any runtime overhead. Others can increase the time needed to execute code up to few…
Over the course of your day as a developer, you use many tools. Appliscale engineers have a few favourites they would like to share with you over the coming weeks. First up is a dive into /proc. Over the next few posts, we will also look at Jmap, Gprof and Netstat. /proc You may wonder,…
In November Sebastian and Beata organised for Appliscale to attend the Autumn Targi Pracy at AGH, hosted in the Main Building. It was a well-run event with a great mix of local Krakow and international companies on display. According to official estimates, over 4000 students attended the fair, and it felt like most…