Jean-François James

Tag: Java

  • Monitoring Java Virtual Threads

    Introduction In my previous article, we’ve seen what Virtual Threads (VTs) are, how they differ from Platform Threads (PTs), and how to use them with Helidon 4. In simple terms, VTs bring in a new concurrency model. Instead of using many PTs that can get blocked, we use a few of them that hardly ever…

  • Running MicroProfile reactive with Helidon Nima and Virtual Threads

    I recently became interested in Helidon as part of my investigations into Java Loom. Indeed, version 4 is natively based on Virtual Threads. Before going any further, let’s introduce quickly Helidon. Helidon is an Open Source (source on GitHub, Apache V2 licence) managed by Oracle that enables to develop lightweight cloud-native Java application with fast…

  • An introduction to MicroProfile GraphQL

    If you’re interested in MicroProfile and APIs, please checkout my presentation Boost your APIs with GraphQL. I did it at EclipseCon 2020. Thanks to the organizers for the invitation! The slide deck is on Slideshare. I’ve tried to be high-level and explain how GraphQL differentiates from REST and how easy it is to implement a…

  • Optimize your code for Quarkus

    My previous article, was about running a JakartaEE/MicroProfile application with minimum changes. My purpose was to keep the Java code as standard as possible so that it can keep running on other implementations such as OpenLiberty, Payara, KumuluzEE, TomEE. This article proposes an alternative: how to optimize your code for Quarkus? It turns out that…

  • Back from Devoxx France 2019

    From 16 to 19 April took place the 8th edition of Devoxx France in Paris at the Palais des Congrés. It aimed to be the main event for passionate French developers. Indeed it is clearly « the place to be » during these 3 days: a unique opportunity to recharge your batteries, to meet interesting people, to get new…

  • Running GraphQL spqr and JNoSQL on GlassFish 5.1

    As you may know, GlassFish 5.1 has been recently released. This is the first Jakarta EE release of GlassFish. I’ve taken this opportunity to deploy  an application mixing GraphQL spqr and JNoSQL (backed by MongoDB) on it. And guess what? It works! This is a preliminary work for the MicroProfile GraphQL initiative that has just…

  • When GraphQL meets MicroProfile

    After a year of actively observing the transition from Java EE to Jakarta EE (including several conferences I have given on the subject), I’ve decided to get more concretely involved in 2019. I’ve taken the opportunity to participate to the MicroProfile GraphQL initiative. In this blog post I’m going to explain how the group started, what…

  • About “Java EE 8 High Performance” by Romain Manni-Bucau

      First off, I must say that my opinion on this book might be a little biased. Indeed, the author Romain Manni -Bucau had worked for several years in my team at Atos Worldline. I’ve known him first as an intern and have been impressed by his capacity to deep dive and quickly into technical…

  • Where is Java EE going?

    Last Summer, Oracle announced its intention to open source Java EE (Enterprise Edition). This has been confirmed at JavaOne 2017. This article is an attempt to clarify the current status and identify some perspectives. Motivations According to David Delabassee, Oracle Java EE evangelist, the motivations leading to this decision are to make Java EE more…