Introduction Nowadays online video ads is an usual practice for everybody. We're used to obtain tailored ads without wondering how this ads were selected and delivered. This paper considers some technology aspects of the real-time bidding (RTB) process, and it may be useful for those who have...

Making decisions and asking questions about the digital services you provide should be easy. However, the data you need is filtered and processed before it reaches you – often when it's too late. A triad of open-source projects – Divolte, Apache Kafka, and Apache Druid – can pr...

The main thing to understand is that NiFi was created to do one really important thing very well, namely "Data Flow Management." Its design is based on the concept of flow-based programming, which you can read about and use for your project at https://en.wikipedia.org/wiki/Flow-based...

This article aims to quickly and concisely understand what Druid is and "how to use it". Let's look at these questions: Do you have a huge amount of event data? Do you need to provide low-latency queries in addition to the data? If your answer to any question is a defin...

Deep understanding of web frameworks and their application in software development is a fundamental skill for any developer. These are the tools through which modern websites and mobile applications are created. They save time, are well-tested for errors, and keep your code neat and accessible. I...