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Martin Ma
Martin Ma

Learn How to Build and Deploy Applications with Liberty Profile




download liberty profile



com.ibm.websphere.appserver.runtime


wlp-kernel


23.0.0.4


zip


``` ```groovy dependencies libertyRuntime group: 'com.ibm.websphere.appserver.runtime', name: 'wlp-kernel', version: '23.0.0.4' ``` To install additional features with Maven or Gradle, see the [Liberty Maven plugin docs]( or the [Liberty Gradle plugin docs]( - As a container using Docker or Podman. You can pull one of the Liberty images from icr.io or Docker Hub and run it as a container. For example: ```bash docker pull icr.io/appcafe/websphere-liberty docker run -d -p 9080:9080 -p 9443:9443 icr.io/appcafe/websphere-liberty ``` or ```bash podman pull icr.io/appcafe/websphere-liberty podman run -d -p 9080:9080 -p 9443:9443 icr.io/appcafe/websphere-liberty ``` For more details on using Liberty images, see [this page]( - From within your Eclipse IDE. You can install WebSphere Liberty using Eclipse by following these steps: - Open the Servers view in Eclipse (if not visible in the menu select Window > View > Others then enter servers in the Show View dialog and click OK. - Right click in the servers view. Click New > Server - Select IBM > Liberty Server and click Next. - If this option is not visible install the WebSphere Developer Tools using the instructions below. - Select the Install from an archive or a repository radio button and click Next. - Enter a file path into the destination path field. - Select the Download and install a new runtime environment from ibm.com radio button. - Select a Liberty Runtime install from the list. - Click Next on this screen and the next. - Accept the license agreement. - Click Finish. If you do not yet have IBM Liberty Developer Tools installed follow these steps. Note the IBM Liberty Developer Tools version and the Liberty runtime version are unrelated and as a result do not have to match. - If you dont already have Eclipse, install Eclipse 2022.03 for Enterprise Java and Web Developers. - Drag the following Install button onto the Eclipse toolbar then follow the prompts. This installs the WebSphere Developer Tools into your Eclipse installation. [![Install]( ## Benefits of using Liberty profile There are some key benefits of using Liberty profile runtime which are listed below: - Simple configuration: Liberty profile makes it really easy to configure your server in a very simple and efficient way using XML file. For example, default server.xml configuration file may look like below: ```xml



servlet-3.0




``` You can add or remove features as per your application needs by modifying this XML file. - Fast startup: Liberty - Fast startup: Liberty profile has a very fast startup time, which is crucial for developing and testing applications quickly and efficiently. According to a benchmark study by IBM, Liberty profile can start up in less than 2 seconds on average, compared to 50 seconds for Apache Tomcat. This means you can save a lot of time and resources by using Liberty profile for your web applications. - Lightweight and modular: Liberty profile is designed to be lightweight and modular, meaning that it only loads the features that you need for your application. This reduces the memory footprint and improves the performance of your server. You can also customize your Liberty profile by adding or removing features as per your requirements. For example, you can add support for Java EE 8, MicroProfile, Jakarta EE 9, Spring Boot, or other technologies by simply adding the corresponding features to your server.xml file. - Cloud-ready and microservices-friendly: Liberty profile is also optimized for cloud environments and microservices architectures. You can easily deploy your Liberty applications to various cloud platforms such as IBM Cloud, AWS, Azure, Google Cloud, or Kubernetes. You can also use Liberty profile to create and run microservices that are scalable, resilient, and independent. Liberty profile supports the MicroProfile specification, which provides a set of APIs and tools for developing and deploying microservices. You can also use Liberty Bells feature to package your application and its dependencies into a single executable JAR file that can run anywhere. ## How Liberty profile compares to other web servers Liberty profile is not the only web server available in the market. There are other popular web servers such as Apache Tomcat, Jetty, WildFly, GlassFish, etc. that you might have heard of or used before. How does Liberty profile compare to these web servers? What are the advantages and disadvantages of using Liberty profile over other web servers? Here is a brief comparison of Liberty profile with some of the other web servers: Web Server Advantages Disadvantages --- --- --- Apache Tomcat - Widely used and supported by the community- Easy to install and configure- Supports servlets, JSPs, and some Java EE features - Does not support full Java EE stack- Requires manual configuration of features- Slower startup time than Liberty profile Jetty - Lightweight and embeddable- Supports servlets, JSPs, and some Java EE features- Flexible and extensible - Does not support full Java EE stack- Requires manual configuration of features- Less documentation and support than Tomcat WildFly - Supports full Java EE stack- Fast and scalable- Rich set of tools and extensions - Complex and heavy- Requires more memory and resources than Liberty profile- Less cloud-ready than Liberty profile GlassFish - Supports full Java EE stack- Reference implementation of Jakarta EE- Good documentation and support - Complex and heavy- Requires more memory and resources than Liberty profile- Less cloud-ready than Liberty profile As you can see, each web server has its own strengths and weaknesses. There is no one-size-fits-all solution for every application. You have to choose the web server that best suits your needs and preferences. However, if you are looking for a web server that is simple, fast, lightweight, modular, cloud-ready, and microservices-friendly, then Liberty profile might be a good option for you. ## Main features of Liberty profile Liberty profile supports a wide range of features that enable you to develop and run various types of web applications. Some of the main features of Liberty profile are: - Servlets: Servlets are Java classes that handle HTTP requests and responses. They are the core components of any web application. Liberty profile supports servlets 3.0, 3.1, 4.0, and 5.0 specifications. - JSPs: JSPs are HTML pages that contain Java code snippets that are executed on the server side. They are used to generate dynamic web content. Liberty profile supports JSPs 2.2, 2.3, 3.0 specifications. - JavaServer Faces (JSF): JSF is a framework that simplifies the development of user interfaces for web applications. It provides a set of components, validators, converters, events, etc. that can be used to create rich and interactive web pages. Liberty profile supports JSF 2.0, 2.1, 2.2 specifications. - Java Persistence API (JPA): JPA is an API that allows you to access and manipulate data from relational databases using object-relational mapping (ORM). It abstracts the details of SQL queries and transactions from your code. Liberty profile supports JPA 2.0, - Java Persistence API (JPA): JPA is an API that allows you to access and manipulate data from relational databases using object-relational mapping (ORM). It abstracts the details of SQL queries and transactions from your code. Liberty profile supports JPA 2.0, 2.1, 2.2 specifications. - Enterprise JavaBeans (EJB): EJBs are server-side components that encapsulate business logic and provide services such as transaction management, security, concurrency, etc. They can be session beans, message-driven beans, or entity beans. Liberty profile supports EJB 3.0, 3.1, 3.2 specifications. - Contexts and Dependency Injection (CDI): CDI is a framework that enables you to inject dependencies and manage the lifecycle of your beans. It also provides features such as interceptors, decorators, events, etc. that enhance the functionality of your beans. Liberty profile supports CDI 1.0, 1.2, 2.0 specifications. - Bean Validation: Bean Validation is an API that allows you to validate the constraints and rules of your data model. It can be used to check the validity of your input data, your business logic, or your database schema. Liberty profile supports Bean Validation 1.0, 1.1, 2.0 specifications. - Java API for RESTful Web Services (JAX-RS): JAX-RS is an API that allows you to create and consume RESTful web services using annotations and standard Java classes. It supports various media types, HTTP methods, parameters, etc. Liberty profile supports JAX-RS 1.1, 2.0, 2.1 specifications. - Java API for WebSocket (JSR 356): JSR 356 is an API that allows you to create and use WebSocket connections for bidirectional communication between clients and servers. It supports text and binary messages, subprotocols, extensions, etc. Liberty profile supports JSR 356 specification. - Java API for JSON Processing (JSR 353): JSR 353 is an API that allows you to parse and generate JSON data using streaming or object model APIs. It supports various JSON features such as arrays, objects, values, etc. Liberty profile supports JSR 353 specification. - Java API for JSON Binding (JSR 367): JSR 367 is an API that allows you to bind JSON data to Java objects and vice versa using annotations or configuration files. It supports various JSON features such as arrays, objects, values, etc. Liberty profile supports JSR 367 specification. -


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