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A LIGHTWEIGHT OPEN-SOURCE MICROSERVICE FRAMEWORK.


DEVELOP MICROSERVICES WITH JAVA EE / JAKARTA EE TECHNOLOGIES AND EXTEND THEM
WITH NODE.JS, GO AND OTHER LANGUAGES. MIGRATE EXISTING JAVA EE APPLICATIONS TO
MICROSERVICES AND CLOUD-NATIVE ARCHITECTURE.

Get startedPOM generator
productannouncementdevelopers
Introducing KumuluzEE 3.9.0 with MicroProfile 3.3
View on blog

productannouncementdevelopers
KumuluzEE Logs 1.4.0 released
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announcementcommunitynewsproduct
Kumuluz is celebrating 5 years! What we’ve done and the roadmap ahead
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KUMULUZEE IS JAVA DUKE'S CHOICE AWARD WINNER

KumuluzEE has won the prestigious 2015 Java Duke's Choice Award. The Duke's
Choice Award is the Java community equivalent of winning an Oscar. The award
celebrates extreme innovation using Java technology.


KUMULUZEE IS PART OF MICROPROFILE

The MicroProfile is a baseline platform definition that optimizes Enterprise
Java for a microservices architecture and delivers application portability
across multiple MicroProfile runtimes.


SUPPORTS JAVA, JAVA EE / JAKARTA EE, NODE.JS, GO AND OTHER LANGUAGES

KumuluzEE supports Java, Node.js, Go and other programming languages. It also
provides support for Blockchain, gRPC, GraphQL and many other advanced
technologies.


WHAT IS KUMULUZEE

KumuluzEE is a lightweight framework for developing microservices using standard
Java, Java EE / Jakarta EE technologies and migrating existing Java applications
to microservices. KumuluzEE packages microservices as standalone JARs. KumuluzEE
microservices are lightweight and optimized for size and start-up time. They fit
perfectly with Docker containers.

KumuluzEE also provides extensions for developing common patterns in cloud
native architectures, including configuration, logging, discovery,
circuit-breakers, metrics, security, event streaming and more.

View all projects
View MicroProfile specification


MICROSERVICES WITH JAVA EE

A standard approach for deploying Java EE applications is packing all components
into a single EAR/WAR archive and deploying the archive on the application
server. This leads to monolithic architectures which make applications difficult
to maintain and scale in cloud (PaaS) environments. The microservice
architecture addresses these shortcomings by decomposing an application into a
set of stateless microservices. Each microservice has a well-defined
functionality and an interface for communication with other services.

Explore the tutorials
Quickstart development with online pom generator


MAIN FEATURES

KumuluzEE allows you to decompose Java applications into microservices and
prepare them for the cloud-native architecture. It allows you to create
standalone lightweight Java and Java EE / Jakarta EE microservices that can be
efficiently deployed, executed and scaled in the cloud on PaaS and Docker-like
environments or as standalone applications. It also supports other languages,
such as Node.js, Go, and others.

KumuluzEE microservices have minimal footprint and require minimal or no
configuration. KumuluzEE automates the tasks, related to the deployment and
configuration of Java microservices, thus overcoming the major drawback of the
microservice architecture and eliminating the need for an application server.




HIGHLIGHTS

Full support for Java SE and EE (Jakarta EE) with support for other languages,
including Node.js and Go.

Fastest start-up
Smallest JAR
Fully cloud-native
Optimized for Docker and Kubernetes
Pure JavaEE microservices
Develop pure Java/JavaEE/JakartaEE based microservices using standard Java EE
APIs and technologies and pack and execute them as stand-alone (Fat/Uber) JARs.
Configurable environments
KumuluzEE is not a traditional Java EE app server, neither does it embed an
app-server inside microservices. It provides configurable Java EE environment
inside stand-alone JARs, which only require JRE (Java Runtime Environment) to
execute.
Standard EE APIs and tech
Develop microservices using standard Java EE APIs and technologies.
Open source
KumuluzEE is fully open, standard-based and extensible.
Leverage your existing knowledge
Leverage your existing Java knowledge and extend it to gradually migrate
existing Java and Java EE applications to microservices and cloud-native
architecture with common cloud-native patterns.
Zero lock-in
KumuluzEE is not for Java only. In addition to Java it provides support for
Node.js and Go, with other languages coming soon.
Easy migration
Gradually migrate existing Java EE applications to microservices and
cloud-native architecture.
Extended microservices
KumuluzEE allows you to extend your microservices with common cloud-native
patterns.
Fastest start-up & small footprint
KumuluzEE generates pure, efficient Java microservices, which start considerably
faster and have lower footprint than the majority of other Java microservice
frameworks. Microservices are lightweight with small footprint, rapid start and
container-ready.
Full cloud-native architecture and more
KumuluzEE provides full support for configuration, service discovery, health,
logging, security, fault tolerance, circuit-breakers, event streaming, metrics,
REST patterns and more. KumuluzEE microservices provide first-class support for
API gateways. KumuluzEE also supports gRPC, GraphQL, Blockchain, event streaming
and many other advanced technologies.
Classical Java EE application server
Part of your application can run as microservices and the rest of the
application can continue to operate on your classical Java EE application
server. KumuluzEE provides full interoperability for container authentication,
CDI, remote EJB calls, remote JMS, data sources, etc.
Support for gradual migration
KumuluzEE provides full support for gradual migration of existing Java EE
applications to the microservice architecture. Step-by-step migration is
supported so that you can extract one or more services from existing application
and migrate them to microservices.
Read more about it on our blog!
If you are exploring microservices for Java EE, you need to take a look at
KumuluzEE's novel yet simple approach to automating microservices for you.

Harshad Oak

Java Champion and Founder of Rightrix Solutions and IndicThreads



KumuluzEE is a great community effort to power Java EE API based microservices,
especially on the cloud.

Reza Rahman

Senior Java Technologist, Author, Speaker



KumuluzEE truly brings microservice architecture to Java EE. Maven-ready, Fat
JAR, modularized dependencies, Docker-ready and pluggable web container makes it
ready to be deployable in any cloud environment. If you are building apps using
Java EE, start your microservice journey with KumuluzEE!

Arun Gupta

Vice President, Developer Relations at Couchbase




EXAMPLE CODE

OrderResource.javapom.xmlpom.xml (MicroProfile)

@Path("/orders")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
@RequestScoped
public class OrdersResource {

    @PersistenceContext(unitName = "books")
    private EntityManager em;

    @GET
    @Path("/{id}")
    public Response getOrder(@PathParam("id") Integer id) {

        BookOrder o = em.find(BookOrder.class, id);

        if (o == null) {
            return Response.status(Response.Status.NOT_FOUND).build();
        }

        return Response.ok(o).build();
    }
}

<properties>
    <kumuluz.version>3.5.0</kumuluz.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.kumuluz.ee</groupId>
            <artifactId>kumuluzee-bom</artifactId>
            <version>${kumuluz.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-core</artifactId>
    </dependency>
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-servlet-jetty</artifactId>
    </dependency>
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-cdi-weld</artifactId>
    </dependency>
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-jax-rs-jersey</artifactId>
    </dependency>
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-jpa-hibernate</artifactId>
    </dependency>
</dependencies>

<properties>
    <kumuluz.version>3.5.0</kumuluz.version>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.kumuluz.ee</groupId>
            <artifactId>kumuluzee-bom</artifactId>
            <version>${kumuluz.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <!-- MicroProfile 2.2 -->
    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-microProfile-2.2</artifactId>
    </dependency>

    <dependency>
        <groupId>com.kumuluz.ee</groupId>
        <artifactId>kumuluzee-jpa-hibernate</artifactId>
    </dependency>
</dependencies>


Read more about in tutorials.


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Österreichische Sozialversicherung, Austria

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Petrol d.d.

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Energetika Ljubljana

ZZZS

Government - Ministry of Public Administration

Goverment - Ministry of Justice

Poštna banka Slovenije

MM turist

Solvera Lynx

IRC Celje

Src

Informatika d.d.

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KUMULUZEE


A LIGHTWEIGHT OPEN-SOURCE MICRO SERVICE FRAMEWORK.

Get started with KumuluzEE
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Kumuluz and KumuluzEE are registered trademarks.
Main sponsor of this project is Sunesis.
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