Glenn Engstrand

Author: glenn

Glenn has focused his twenty plus year professional career growing Independent Software Vendors by maturing their Software Development Life Cycle processes and by fostering personal and professional growth in their development staffs. Glenn has delivered software architectures for scalable, enterprise grade systems in Java, .NET, LAMP, and Windows DNA.

Node.js vs DropWizard

I have been evaluating various Java based technologies by writing a news feed micro-service in those technologies and blogging about the Developer eXperience. In this blog, I will turn my attention to the first of many non-Java based technologies where I wrote yet another news feed micro-service implementation, this time in the Node.js programming language.…

MySql vs PostGreSql vs Docker

In my last blog, I compared two functionally identical micro-services, one written in Scala and the other in Clojure, in terms of performance under load in AWS. In this blog, I compare the performance of the Scala micro-service under load in AWS running with MySql, running with PostGreSql, and running both with and without Docker.…

Micro-Services: Clojure vs Scala

In a previous post, I compared Scala and Clojure when it came to processing big data. In this post, I am comparing Scala and Clojure in the world of micro-services. Earlier, I had written a rudimentary news feed service in Clojure. Recently, I re-implemented the same news feed service in Scala. Given the same task,…