IBM Liberty: A Next-Generation Application Runtime - Learn More and Download
Download IBM Liberty: A Lightweight and Flexible Java Runtime
If you are looking for a fast, reliable, and easy-to-use Java runtime for your applications, you might want to consider IBM Liberty. IBM Liberty is a next-generation application runtime that accelerates the delivery of cloud-native applications, allowing you to rapidly deliver differentiating innovation. In this article, we will explain what IBM Liberty is, what are its benefits and features, and how to download, install, and run it.
What is IBM Liberty?
IBM Liberty is a lightweight Java runtime that is ideal for building microservices, modern monolithic applications, and anything in between. It is built on the open source Open Liberty runtime and is compatible with MicroProfile and Jakarta EE. IBM Liberty supports the latest Java standards and technologies, such as Java SE 11, Java EE 8, MicroProfile 4.0, Jakarta EE 9.1, and more. It also provides enterprise-grade capabilities, such as high availability, clustering, security, monitoring, and administration.
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The benefits of IBM Liberty
IBM Liberty offers many benefits for developers and organizations who want to create and deploy applications in a trusted, secure, and open environment. Some of the benefits are:
Performance: IBM Liberty is optimized for containerized deployments, continually auto-tuning its performance to the environment. It has a fast start-up time, low memory footprint, high throughput, and scalability.
Cost: IBM Liberty helps reduce infrastructure and license costs by requiring less resources and supporting flexible pricing models. You can also use Open Liberty for free with IBM support if you have a WebSphere Application Server license.
Flexibility: IBM Liberty allows you to enable only the features that your application needs, making it modular and adaptable. You can also create your own features or use third-party features to extend its functionality.
Productivity: IBM Liberty helps you to be productive with tools of your choice. You can use intuitive developer tools for Eclipse, Visual Studio Code, or IntelliJ IDEA. You can also use dev mode to automatically detect changes in your code and deploy them to your running server.
Openness: IBM Liberty is built on the open source Open Liberty runtime and is committed to open standards. You can avoid vendor lock-in by using the latest MicroProfile, Jakarta EE, and Java EE specifications. You can also contribute to the Open Liberty community or use its documentation and resources.
The features of IBM Liberty
IBM Liberty provides a rich set of features that enable the runtime capabilities that your application needs. Some of the features are:
Web container: Supports servlets, JSPs, JSFs, web services, RESTful services, web sockets, and more.
EJB container: Supports stateless session beans, singleton session beans, message-driven beans, timers, asynchronous methods, transactions, security, and more.
JDBC: Supports relational database access with connection pooling, distributed transactions, data sources, drivers, SQL queries, and more.
JMS: Supports messaging services with queues, topics, connection factories, message listeners, message-driven beans, transactions, security, and more.
JPA: Supports persistence services with entities, entity managers, queries, criteria API, caching, transactions, security,
JAX-RS: Supports RESTful web services with annotations, providers, filters, interceptors, clients, JSON processing, and more.
JAX-WS: Supports SOAP-based web services with annotations, handlers, clients, XML processing, and more.
CDI: Supports context and dependency injection with annotations, scopes, qualifiers, producers, disposers, interceptors, decorators, events, and more.
Bean Validation: Supports validation of Java beans with annotations, constraints, groups, messages, and more.
JSON-B: Supports binding of Java objects to JSON and vice versa with annotations, adapters, serializers, deserializers, and more.
JSON-P: Supports parsing and generating of JSON with object model API and streaming API.
JAXB: Supports binding of Java objects to XML and vice versa with annotations, adapters, schema generation, validation, and more.
JAX-RPC: Supports remote procedure calls using SOAP-based web services with stubs, skeletons, handlers, clients, and more.
JTA: Supports distributed transactions with annotations, user transactions, transaction managers, synchronization, and more.
JNDI: Supports naming and directory services with contexts, bindings, lookups, referrals, events, and more.
How to download IBM Liberty?
You can download IBM Liberty in different ways depending on your needs and preferences. Here are some of the options:
Download as a ZIP file
You can download IBM Liberty as a ZIP file from the . You can choose from different editions and versions of IBM Liberty. For example, you can download the full platform edition that includes all the features of IBM Liberty or the base edition that includes only the core features. You can also download the latest release or a specific release of IBM Liberty. After downloading the ZIP file, you can extract it to any location on your file system.
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Download as a Maven or Gradle dependency
You can download IBM Liberty as a Maven or Gradle dependency from the . You can specify the group ID as io.openliberty, the artifact ID as openliberty-runtime, and the version as the desired release of IBM Liberty. For example,
<dependency> <groupId>io.openliberty</groupId> <artifactId>openliberty-runtime</artifactId> <version>188.8.131.52</version> <type>zip</type> </dependency>
This will download IBM Liberty as a ZIP file to your local Maven or Gradle repository. You can then unzip it to any location on your file system.
Download as a container image
You can download IBM Liberty as a container image from the . You can choose from different tags that correspond to different editions and versions of IBM Liberty. For example,
docker pull openliberty/open-liberty:full-java11-openj9-ubi
This will download the full platform edition of IBM Liberty with Java 11 OpenJ9 on Red Hat Universal Base Image (UBI). You can then run IBM Liberty as a container using Docker or any other container platform.
How to install and run IBM Liberty?
You can install and run IBM Liberty in different ways depending on how you downloaded it. Here are some of the options:
Install from a ZIP file
If you downloaded IBM Liberty as a ZIP file, you can install it by extracting it to any location on your file system. For example,
unzip openliberty-184.108.40.206.zip -d /opt/ibm
This will create a directory called wlp under /opt/ibm, which is the installation directory of IBM Liberty. You can then run IBM Liberty by using the server command under the wlp/bin directory. For example,
/opt/ibm/wlp/bin/server start defaultServer
This will start the default server instance of IBM Liberty, which is configured by