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Introduction to Chronicle Queue 1. Overview Chronicle Queue persists every single message using a memory-mapped file. This allows us to share messages between processes. It stores data directly to off-heap memory, therefore, making it free of GC overhead. It is designed for providing low-latency message framework for high-performance applications. In… Continue Reading java-chronicle-queue

Introduction to Netflix Servo 1. Overview Netflix Servo is a metrics tool for Java applications. Servo is similar to Dropwizard Metrics, yet much simpler. It leverages JMX only to provide a simple interface for exposing and publishing application metrics. In this article, we’ll introduce what Servo provides and how can… Continue Reading netflix-servo

A Solid Guide to SOLID Principles 1. Introduction In this tutorial, we’ll be discussing the SOLID principles of Object-Oriented Design. First, we’ll start by exploring the reasons they came about and why we should consider them when designing software. Then, we’ll outline each principle alongside some example code to emphasize… Continue Reading solid-principles

Introduction to Twitter4J 1. Overview In this article, we will have a look at using Twitter4J in a Java application to communicate with Twitter. 2. Twitter4J Twitter4J is an open source Java library, which provides a convenient API for accessing the Twitter API. Simply put, here’s how we can interact… Continue Reading twitter4j

A Quick Guide to the JVM Languages 1. Introduction Besides Java, other languages can run on the Java Virtual Machine like Scala, Kotlin, Groovy, Clojure. In the following sections, we’ll take a high-level look at the most popular JVM languages. Of course, we’ll start with the forerunner of JVM languages… Continue Reading jvm-languages

Introduction to Jooby 1. Overview Jooby is a scalable and fast micro web framework build on top of the most used NIO web servers. It’s very straightforward and modular, clearly designed for the modern day’s web architecture. It comes with support for Javascript and Kotlin too. By default, Jooby comes… Continue Reading jooby

Introduction to Scala 1. Introduction In this tutorial, we are going to look at Scala – one of the primary languages that run on the Java Virtual Machine. We’ll begin with the core language features such as values, variables, methods, and control structures. Then, we’ll explore some advanced features such… Continue Reading scala-intro

Generating a Book with Asciidoctor 1. Introduction In this quick article, we’ll demonstrate how to generate a book from an AsciiDoc document, and how to customize your book with various style options. If you’re not familiar with AsciiDoc in Java, you can read our Introduction to AsciiDoctor. 2. Backend Book… Continue Reading asciidoctor-book