Hazelcast is a clustering and highly scalable data distribution platform.
With its various distributed data structures, distributed caching capabilities, elastic nature, memcache support,
integration with Spring and Hibernate and more importantly with so many happy users, Hazelcast is feature-rich,
enterprise-ready and developer-friendly in-memory data grid solution.
Features:
- Distributed implementations of
java.util.{Queue, Set, List, Map}. - Distributed implementation of
java.util.concurrent.locks.Lock. - Distributed implementation of
java.util.concurrent.ExecutorService. - Distributed
MultiMapfor one-to-many relationships. - Distributed
Topicfor publish/subscribe messaging. - Distributed Query and Aggregators.
- Synchronous (write-through) and asynchronous (write-behind) persistence.
- Transaction support.
- Specification compliant JCache implementation.
- Native Java, .NET, C++ clients, Memcache and REST clients.
- Socket level encryption support for secure clusters.
- Second level cache provider for Hibernate.
- Monitoring and management of the cluster via JMX.
- Dynamic HTTP session clustering.
- Support for cluster info and membership events.
- Dynamic discovery, scaling, partitioning with backups and fail-over.
Getting Started
Documentation
See documentation at www.hazelcast.org
Code Samples
Releases
Download from www.hazelcast.org
Or use Maven snippet:
<dependency>
<groupId>com.hazelcast</groupId>
<artifactId>hazelcast</artifactId>
<version>${hazelcast.version}</version>
</dependency>
Snapshot Releases
Maven snippet:
<dependency>
<groupId>com.hazelcast</groupId>
<artifactId>hazelcast</artifactId>
<version>${hazelcast.version}</version>
</dependency>
<repository>
<id>sonatype-snapshots</id>
<name>Sonatype Snapshot Repository</name>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
Building From Source
Pull latest from repo git pull origin master and use Maven install (or package) to build mvn clean install.
Testing
Hazelcast has 3 testing profiles:
- Default: Type
mvn testto run quick/integration tests (those can be run in parallel without using network). - Slow Tests: Type
mvn test -P slow-testto run tests that are either slow or cannot be run in parallel. - All Tests: Type
mvn test -P all-teststo run all tests serially using network.
Checkstyle and SpotBugs
Hazelcast uses static code analysis tools to check if a Pull Request is ready for merge.
Run the following commands locally to check if your contribution is Checkstyle and SpotBugs compatible.
mvn clean validate -P checkstyle
mvn clean compile -P spotbugs
Contributing to Hazelcast
We encourage Pull Requests and process them promptly.
To contribute:
- see Developing with Git for our Git process
- complete the Hazelcast Contributor Agreement
For an enhancement or larger feature, create a GitHub issue first to discuss.
Mail Group
Please join the mail group if you are interested in using or developing Hazelcast.
http://groups.google.com/group/hazelcast
License
Hazelcast is available under the Apache 2 License. Please see the Licensing section for more information.
Copyright
Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
Visit www.hazelcast.com for more info.