Automatic Feature Engineering on Large Scale Time Series Data using tsfresh & Dask

[I have delivered a talk on this topic in Jan' 2021. You can find that here] The internet of things, digitized health care systems, financial markets, smart cities, all are continuously generating time series data of different types, sizes and complexities. As continuous monitoring & data collection becomes more feasible and popular, the demand for … Continue reading Automatic Feature Engineering on Large Scale Time Series Data using tsfresh & Dask

Wildfly 8.x : Control maximum number of connections (threads) assigned to an application

In Wildfly, multiple applications can be deployed together. With the default configuration, there is no control on the maximum number of connections/threads assigned to any particular application. This blog describes configurations needed to restrict maximum number of threads assigned to any application. That way if one of the applications hang (consuming all the threads assigned … Continue reading Wildfly 8.x : Control maximum number of connections (threads) assigned to an application

Popularity (Usability) Index for Programming Languages

According to Oxford Dictionaries, the word "popular" means "liked or admired by many people or by a particular person or group". I know folks who code just for their living without any love for it. So, I am not going to use the term "Popularity", but will use the term "Usability" - "Usability Index For … Continue reading Popularity (Usability) Index for Programming Languages

Inject Dependencies – Manually

In another post, “Do I Really Need a Singleton?”, I wrote about the problems introduced by the Singleton design pattern. When the single unique instance is being accessed through the getInstance() method, Singleton acts as a global variable in disguise and introduces tight coupling and unwanted dependencies. I have received two immediate questions from my … Continue reading Inject Dependencies – Manually

Problems with Checked Exception in Java

Recap: Exception Hierarchy In Java In Java, we have three types of Throwables : Error and it’s subclasses Runtime Exception and it’s subclasses And the rest (Non-Runtime Exceptions) Exceptions those lie in the third category are called Checked Exceptions. If a method throws a checked exception, the compiler makes sure that the API user handles … Continue reading Problems with Checked Exception in Java