UML essentials in 10 minutes

The development process in modern IT industry usually requires a big number…

The development process in modern IT industry usually requires a big number of different means and tools. Before creating a working and valuable product the system has to be thoroughly designed.  To facilitate the process of system design, the UML was invented.

NeDB basics

NeDB comes from Node.js Embedded Database. It is a lightweight NoSQL database…

nedb-logoNeDB comes from Node.js Embedded Database. It is a lightweight NoSQL database written in pure JavaScript that can be used both as persistent and in-memory storage.

What is Apache Ambari?

Apache Ambari is a web application that manages Big Data clusters. It…

what is apache ambariApache Ambari is a web application that manages Big Data clusters. It allows to control the variety of metrics such as disk, network and CPU usages on hosts, number of components alive, hosts states and many other specific indicators.