WildFly 21.0.1 is now available

WildFly is a powerful, modular, & lightweight application server that helps you build amazing applications.


Configuration in WildFly is centralized, simple and user-focused. The configuration file is organized by subsystems that you can easily comprehend and no internal server wiring is exposed. All management capabilities are exposed in a unified manner across many forms of access. These include a CLI, a web based administration console, a native Java API, an HTTP/JSON based REST API, and a JMX gateway. These options allow for custom automation using the tools and languages that best fit your needs.


WildFly does classloading right. It uses JBoss Modules to provide true application isolation, hiding server implementation classes from the application and only linking with JARs your application needs. Visibility rules have sensible defaults, yet can be customized. The dependency resolution algorithm means that classloading performance is not affected by the number of versions of libraries you have installed.


WildFly takes an aggressive approach to memory management. The base runtime services were developed to minimize heap allocation by using common cached indexed metadata over duplicate full parses, which reduces heap and object churn. The administration console is 100% stateless and purely client driven. It starts instantly and requires zero memory on the server. These optimizations combined enable WildFly to run with stock JVM settings and also on small devices while leaving more headroom for application data and supports higher scalability.

Standards Based

WildFly implements the latest in enterprise Java standards from Jakarta EE and Eclipse MicroProfile. These improve developer productivity by providing rich enterprise capabilities in easy to consume frameworks that eliminate boilerplate and reduce technical burden. This allows your team to focus on the core business needs of your application. By building your application on standards you retain the flexibility to migrate between various vendor solutions.

Latest News

WildFly 21.0.1 is released!

WildFly 21.0.1.Final is now available for download. It’s been about a month since the WildFly 21 release, so we’ve done a small bug fix update, WildFly 21.0.1. The full list of issues resolved in WildFly 21.0.1 is available here. Issues resolved in the WildFly Core update included with WildFly 21.0.1 are available here. Enjoy!

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WildFly 22 Alpha1 is released!

I’m pleased to announce that the WildFly 22 Alpha1 zips are now available for download. This includes the first release of a new 'WildFly Preview' distribution of WildFly, which we’re using to give our community a tech preview look at things we see coming down the road in our main WildFly distribution. Right now this is mostly about what we are doing with Jakarta EE 9, although there are some other differences that I’ll get...

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WildFly MicroProfile Reactive Specifications Feature Pack 1.0.0.Final Released!

I am happy to announce the 1.0.0.Final release of the MicroProfile Reactive specifications feature pack for WildFly. It is tested against both WildFly 20 and 21. The main changes since 1.0.0.Beta1 are essentially upgrades to the latest SmallRye implementations of all the MicroProfile Reactive specifications, and fixing problems related to memory leaks and redeployments. The MicroProfile Reactive specifications are: MicroProfile Reactive Messaging 1.0 - this is a framework for building event-driven, data streaming and event...

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WildFly 21 S2I images have been released on quay.io

WildFly 21 S2I Docker images The WildFly S2I (Source-to-Image) builder and runtime Docker images for WildFly 21 have been released on quay.io/wildfly. For a complete documentation on how to use these images using S2I, OpenShift and Docker, refer to the WildFly S2I README. Adding the imagestreams and template to OpenShift At some point the new images will be made available from the OpenShift catalog and image repository. But you can already use these images by...

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New Security Features in WildFly 21

This blog post highlights the new security features that are in WildFly 21.

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Release of WildFly Operator 0.4.1

WildFly Operator now allows seamless upgrades of application deployed on OpenShift.

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WildFly Bootable JAR is final!

Bootable JAR Maven plugin 2.0.0.Final has been released. Using WildFly 21 you can now build self-contained JAR file to run microservices.

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WildFly 21 is released!

I’m excited to announce that the WildFly 21 Final zip is now available for download. Bootable JAR / Galleon Layers The biggest thing in WildFly 21 is Jean-Francois Denise and the team have added GA-level support for the Bootable JAR feature that we’ve been working on over the last two releases. The bootable jar feature allows you to add a maven plugin to your application’s pom and have your build package your application deployment and...

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