Open Liberty is a lightweight, modular Java runtime designed for building cloud-native applications, microservices and enterprise applications.
It aims to provide fast startup times and a low memory footprint while loading only the runtime capabilities required by an application.
The runtime implements Jakarta EE and Eclipse MicroProfile technologies. Developers can select individual features or complete platform profiles, making it possible to construct a focused server environment without loading unnecessary components.
This is free and open source software.
Key Features
- Lightweight Java runtime with fast startup and a low memory footprint.
- Modular feature system loads only the APIs and services required by an application.
- Supports Jakarta EE for building secure, scalable enterprise Java applications.
- Implements Eclipse MicroProfile technologies for cloud-native Java microservices.
- Provides APIs for configuration, health checks, metrics, fault tolerance, telemetry, JWT authentication and OpenAPI documentation.
- Development mode automatically detects, recompiles and deploys code changes.
- Runs unit and integration tests on demand or automatically following code changes.
- Supports Maven and Gradle development workflows.
- Provides debugging integration for Eclipse, Visual Studio Code and IntelliJ IDEA.
- Includes a zero-migration architecture intended to preserve existing application behaviour across runtime updates.
- Offers official container images and support for container-based development and deployment.
- Dynamically applies many configuration and feature changes without restarting the server.
Website: github.com/OpenLiberty/open-liberty
Support:
Developer: Open Liberty
License: Eclipse Public License 2.0
Open Liberty is written in Java. Learn Java with our recommended free books and free tutorials.
Related Software
| Java Application Servers | |
|---|---|
| TomEE | Jakarta EE 9.1 certified application server extends Apache Tomcat |
| Tomcat | Java Servlet container, or web container |
| Jetty | Provides a web server and servlet container |
| Wildfly | Powerful, modular and lightweight application server |
| Geronimo | Provides JavaEE/JakartaEE libraries and Microprofile implementations |
| Lucee | Lightweight dynamic CFML scripting language with a solid foundation |
| GlassFish | Jakarta EE platform application server |
| Payara | Middleware platform supporting deployments of Java EE and MicroProfile apps |
| Open Liberty | Lightweight, modular Java runtime |
| JonAS | Java EE 6 web profile certified enterprise server |
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