JCON EUROPE 2025
Register for our workshop on Monday, visit our booth & sessions and meet our team at JCON. We're proud to be a sponsor.
Learn more about the team behind MicroStream. We are Java enthusiasts who love working on making Java
better, faster, and more convenient for the entire Java community.
In 2013 our vision was to create a Java-native persistence layer based on the already existing and powerful Core Java concepts instead of using external databases that work fundamentally differently from Java. Because we were convinced that this would radically simplify and accelerate the entire database development process with Java. Today, EclipseStore is a stable, bullet-proof open-source Java-native persistence framework that enables you to persist any complex Java object graph into any data storage and restore in RAM when needed without the need for any expensive mappings or data conversions.
When we realized the fantastic advantages of cloud-native object storage such as AWS S3, which is up to 99% cheaper than any cloud database (DBaaS), robust, high available, and fully managed, we wanted to connect cloud object storage seamlessly with Java applications. Today, EclipseStore enables you to store any Java object graph persistently into any cloud object storage like AWS S3 or Azure Object Storage. Users benefit from max simplicity, robustness, and save up to 99% database costs in the cloud.
The Java VM's JIT compiler creates highly optimized machine code that makes data processing with Java extremely fast. Java Streams API enables searching and filtering data in memory in microseconds - up to 1000x faster than traditional database queries. Additionally, Apache Lucene introduces a powerful full-text search. The only features missing so far were a Java-native persistence and an indexing concept. Now, EclipseStore provides both concepts and empowers Java users to leverage this incredible performance for their enterprise business applications.
Due to the high performance of Java in-memory data processing (microsecond query-times) compared with traditional database query performance (millisecond query-times), users will massively save computing power. This results in lower energy consumption and carbon emission in the data center. We are very excited that we are able to help our users to save energy and carbon emissions and play our part toward a greener planet for future generations.
With Eclipse Serializer, EclipseStore, and Eclipse Data Grid, we have launched and are maintaining 3 open-source projects under the roof of the Eclipse Foundation. Open Source provides strong value and great benefits for our community. Debugging, finding, and fixing bugs is possible. Security issues can be found and eliminated faster. It gives you the flexibility to customize and extend the software on your own. Permanently reviews of the source code and numerous testing cycles by developers across the world increase the stability of our frameworks. This will permanently improve the already high code quality. We as developers love working on open-source projects because the collaborative nature of open-source allows us to work with a community of developers all over the world to share our interests, passions, and goals, improve the code as well as our personal skills and create new ideas and strategies. This leads to faster development cycles, better code quality, and more innovation. It's fantastic to contribute to important software used by numerous developers globally and to receive recognition for it from the developer community.











We are Java enthusiasts who love to work on making Java better, faster, and more convenient for the entire Java community. With 20+ years of Java background, we have worked on Java IDEs, ORM frameworks, and database tools before we started MicroStream. We have been contributing to open-source for more than 10 years. We have launched Eclipse Serializer, EclipseStore and Eclipse Data Grid, as well as further open-source projects before. The MicroStream headquarters is located in beautiful Regensburg, Germany, but our team is working full remotely and becomes more and more international. In order to achieve our ambitious goals, we need people who are excited about what we do and thrilled to join us.
[Our career page is currently being revised and will be available soon.]
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As an Eclipse Contributing Member, we are able to collaborate closely with the Eclipse community and numerous great Eclipse projects, and contribute actively to new innovations and standards our community and we ourselves use daily. This enables us to improve MicroStream even more, grow faster, and constantly deliver high-quality open-source software to the Java community.
MicroStream is well integrated with Micronaut, one of the most popular microservice frameworks on the market. As a sponsor, we support the further development of the Micronaut framework, are able to work closely with our friends on constantly improving the MicroStream integration and deliver value to the fantastic Micronaut open source developer community.
We are proud to be an integral part of and contribute to leading microservice frameworks. We are happy to deliver value to the Java open source community.

Micronaut provides first-class support for EclipseStore. MicroStream is a major sponsor of the Micronaut Open Source project.

Helidon was the first microservice framework that supports EclipseStore. Both Helidon flavours, Helidon MP and SE provide a great EclipseStore integration. Helidon is a leading microservice framework for Java, powered by Oracle.





























Upcoming Trainings
JAVAPRO Online Training
Tue. 09 Dec, 2025 | 05:00 - 09:00 pm CET | FREE
Speaker: Christian Kuemmel
Register