How to Gather Performance Metrics in Spring Batch
This post will look at two ways to extract performance metrics out of a Spring Batch Job using Dropwizard Metrics.
Johan Zietsman
development
Johan Zietsman
How To Reverse Indent Files With RxJS
A Basic introduction to reactive programming using RxJS 5.0 by building a node script that reverse indents files.
Johan Zietsman
How To Build a Chat App Using WebFlux, WebSockets & React
WebFlux [http://docs.spring.io/spring-framework/docs/5.0.0.RC2/spring-framework-reference/web.html#web-reactive] is one of the standout features of Spring 5.0, which is a functional web framework alternative to Spring-MVC, built on top of Reactive principles. This post will look at how to build a b…
Johan Zietsman
Tech Interview CheatSheet - Trees
Overview of Trees, including depth first search (DFS), breadth first search (BFS), Binary Search Trees & Self Balancing Trees.
Johan Zietsman
Tech Interview CheatSheet - Maps & Hashing
In Part 1 of this series I looked at common search and sorting algorithms used on Lists [https://johanzietsman.com/tech-interview-cheatsheet-lists-search-sort/]. This post will look at Hash functions and how they are applied to Sets and Maps to offer constant time lookup performance. Hash Functions…
Johan Zietsman