A powerful, modular, & lightweight application server that helps you build amazing applications.

Now available: WildFly 30.0.1 Final


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

Shaping the Future of WildFly Community Social Media!

Greetings, WildFly Community Members! We trust this message finds you in the best of health and spirits as we embark on an exciting journey to enhance your experience within our vibrant WildFly community. Your engagement and feedback are invaluable to us, and to better understand your preferences, we’ve created a comprehensive poll covering both social media platforms and content types. Your choices will guide us in creating a more tailored and engaging experience for all...

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WildFly 30.0.1 is released!

WildFly 30.0.1.Final is now available for download. It’s been about five weeks since the WildFly 30 release, so we’ve done a small bug fix update, WildFly 30.0.1. This includes an update to WildFly Preview. The following issues were resolved in 30.0.1: Bugs [WFLY-18295] - WildFly vs WildFly Preview document needs update [WFLY-18384] - [CLUSTERING] File containing session data is never shrunk or deleted [WFLY-18533] - Simplest JAXRS app is failing when deployed in server provisioned...

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Introduction to the various Java based Kubernetes/OpenShift tools and their usages in WildFly related projects

There are various Java based Kubernetes/OpenShift related tools that have different functions, and some of their functions are overlapping. Here is the (partial) list of these tools: Dekorate eclipse/jkube: Build and Deploy java applications on Kubernetes fabric8io/kubernetes-client: Java client for Kubernetes & OpenShift fabric8io/docker-maven-plugin GoogleContainerTools/jib wildfly-maven-plugin: WildFly Application Server Maven Plugin All the above tools can be used as Maven plugin, and they can be used together if necessary(Which is determined by the requirements). In...

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Using distributed realm ignore-unavailable-realms attribute in Elytron

An example of distributed realm ignore-unavailable-realms attribute usage in WildFly.

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Installing additional feature packs in WildFly

Introduction In a previous article, you learnt how to install and use Prospero to provision a WildFly server. In this article, you will learn how to use Prospero to modify an existing server and extends its capabilities by adding a MariaDB datasource. For the purpose of this article, we assume the existing server has been installed from a downloaded WildFly zip archive. However the process works for servers installed using Prospero. In such case, simply...

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WildFly Feature Development Process

Some of the developers of WildFly have been thinking about how to clarify and formalize some of the processes we use when developing WildFly, and I want to make the broader WildFly community aware of the discussion. This post basically duplicates one I recently made on the wildfly-dev mail list. I’d love to hear your thoughts about this on that mail thread or in Zulip Overview The WildFly project has some pretty high standards around...

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Change the default encoding of the audit log file in WildFly

An overview of how to change the default encoding of the audit log file.

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Identity Propagation with OpenID Connect

Learn how to propagate identities within a deployment and across deployments when securing WildFly apps with OpenID Connect.

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