Posted on

What Happened to HornetQ, the JMS That Shattered Records?

HornetQ 2.0 broke records and defeated top-ranked messaging services in benchmark tests. Why wasn't it widely adopted?


Software vendors make all kinds of claims about their products, but what developers care about is proof. When testing a new product, it's important to see how it stacks up against its competition.

For years, researchers at UT Darmstadt have compared the performance of message-oriented middleware servers based on Java Messaging Service (JMS). In 2010, the SPECjms2007 benchmark record was smashed by HornetQ, an open-source enterprise messaging system from JBoss.

Posted on

Spring Webflux: EventLoop vs Thread Per Request Model

Spring Webflux Introduction

Spring Webflux has been introduced as part of Spring 5, and with this, it started to support Reactive Programming. It uses an asynchronous programming model. The use of reactive programming makes applications highly scalable to support high request load over a period of time.

What Problem It Solved Compared With Spring MVC

Spring MVC uses a Synchronous Programming model, where each request has been mapped to a thread and which is responsible to take the response back to the request socket. Cases where applications make some network calls like, fetch data from a database, fetch a response from another application, file read/write etc., a request thread has to wait to get the desired response. 

Posted on

Digging Into Sockets With Java Flight Recorder

Let's look at one amazing tool for gathering information about what's going on in your JVM — the Java Flight Recorder.
Let's look at one amazing tool for gathering information about what's going on in your JVM. The tool is called the  Java Flight Recorder, and in today's article, I'm going to use it to dig into how Sockets behave in your Java application.

A lot of people use HTTP APIs to communicate between their services (let's have another article about whether it's a good solution or not), and in a majority of cases, it works fine. However, we can get into situations where performance really matters, and especially for libraries writers, JFR can be a very useful tool to see I/O works in their code.

You may also like: Using Java Flight Recorder With OpenJDK 11

This article is not an introduction to Flight Recorder, it's rather more practical. If you want to learn more about this technology, you can start with JEP 328: Flight Recorder.

Posted on

Build a Simple Netty Application With and Without Spring

As an asynchronous, non-blocking input/output (NIO) framework, Netty is used for the rapid development of maintaining highly scalable protocol servers and clients. Building low-level network servers and clients is relatively straightforward with Netty. Developers can work on the socket level (e.g. creating original communication protocols between clients and servers). 

Blocking and non-blocking unified APIs, amenable threading model, and SSL/TLS are all supported by Netty. All requests run asynchronously on an individual thread with a non-blocking server. (The event loop shouldn’t be blocked by the function.) This contradicts operations performed in a blocking server model, which usually uses a separate thread to run each request. Without the need for switching or creating threads when the load increases, the non-blocking model decreases overhead and allows for faster development as traffic expands.