As the job demand is going nowhere in a decade, a lot of new guys want to get into programming. There are numerous courses online, teaching a variety of skills in programming. There are also new shinning frameworks climbing up GitHub trending every day. I see a lot of people, typically newly graduated students, get confused. There seems to be an endless stream of knowledge to learn. How many skills are enough?

I have done some quick’n’dirty bid data processing with Apache Beam in past weeks. As someone who try to stay away from JVM, I am not a big data expert at all. However the working with apache beam is a blast (Using JAVA!). The lazy execution style feels right a home. I love wiring a various component into a topology, and only start processing when data arrives. I once heard a Haskell fan said that she thought lazy execution was what set Haskell apart from other programing languages.