...

Apache Geode is a mature, robust technology originally developed by GemStone Systems. Commercially available as GemFire™, it was first deployed in the financial sector as the transactional, low-latency data engine used in Wall Street trading platforms.  Today Apache Geode technology is used by hundreds of enterprise customers for high-scale business applications that must meet low latency and 24x7 availability requirements.

How to Get Apache Geode

You can download Apache Geode from the website, run a Docker image , or install with homebrew  on OSX. Application developers can load dependencies from Maven Central .

<dependencies>

    <dependency>
        <groupId>org.apache.geode</groupId>
        <artifactId>geode-core</artifactId>
        <version>$VERSION</version>
    </dependency>
</dependencies>

dependencies {
  compile "org.apache.geode:geode-core:$VERSION"
}

Main

...

Concepts

...

and

...

Components

Caches are an abstraction that describe a node in a Geode distributed system.

...

• Combines redundancy, replication, and a "shared nothing" persistence architecture to deliver fail-safe reliability and performance.
• Horizontally scalable to thousands of cache members, with multiple cache topologies to meet different enterprise needs. The cache can be distributed across multiple computers.
• Asynchronous and synchronous cache update propagation.
• Delta propagation distributes only the difference between old and new versions of an object (delta) instead of the entire object, resulting in significant distribution cost savings.
• Reliable asynchronous event notifications and guaranteed message delivery through optimized, low latency distribution layer.
• Data awareness and real-time business intelligence. If data changes as you retrieve it, you see the changes immediately.
• Integration with Spring Framework to speed and simplify the development of scalable, transactional enterprise applications.
• JTA compliant transaction support.
• Cluster-wide configurations that can be persisted and exported to other clusters.
• Remote cluster management through HTTP.
• REST APIs for REST-enabled application development.
• Rolling upgrades may be possible, but they will be subject to any limitations imposed by new features.

Anchor
Geode in 5 minutes Geode in 5 minutes

...

How to Get Apache Geode

You can download Apache Geode from the website, run a Docker image , or install with homebrew  on OSX. Application developers can load dependencies from Maven Central .

<dependencies>

    <dependency>
        <groupId>org.apache.geode</groupId>
        <artifactId>geode-core</artifactId>
        <version>$VERSION</version>
    </dependency>
</dependencies>

dependencies {
  compile "org.apache.geode:geode-core:$VERSION"
}

Geode in 5 minutes

Download Geode by following one of the methods described aboveDownload and install Geode binaries from http://geode.apache.org/releases/, and follow the installation instructions at in the posted manual at http://geode.apache.org/docs/. 

...

Write a client application (this example uses a Gradle build script):

import java.util.Map;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.client.*;

public class HelloWorld {
  public static void main(String[] args) throws Exception {
    ClientCache cache = new ClientCacheFactory()
      .addPoolLocator("localhost", 10334)
      .create();
    Region<String, String> region = cache
      .<String, String>createClientRegionFactory(ClientRegionShortcut.CACHING_PROXY)
      .create("hello");

    region.put("1", "Hello");
    region.put("2", "World");

    for (Map.Entry<String, String>  entry : region.entrySet()) {
      System.out.format("key = %s, value = %s\n", entry.getKey(), entry.getValue());
    }
    cache.close();
  }
}

...