KMF Storage Plugin: LevelDB backend

This KMF plugin aims at offering an efficient file based storage, embeddable directly in your JVM-based application. This backend is also available for Android usages. LevelDB offers a very efficient storage that can handle billions of KMF elements on a single machine based storage. This plugin does not rely on an external server. This feature both boost the performance by avoiding network or Inter-Processus communications and in addition sipplify a lot the configuration because only require a target directory to persist model on disk.

Last versions:

• 4.27.0 compatible with KMF framework 4.27.x

Changelog

• 4.27.0 use LevelDB JNI in version 1.8

Dependency

Simply add the following dependency to your maven project:

<dependency>
    <groupId>org.kevoree.modeling.plugin</groupId>
    <artifactId>leveldb</artifactId>
    <version>REPLACE_BY_LAST_VERSION</version>
</dependency>

Usage

The LevelDBPlugin is the main entry point for this plugin. Simply reference the full qualified name of the storage (should be an existant directory).

import org.kevoree.modeling.cdn.KContentDeliveryDriver;
import org.kevoree.modeling.plugin.LevelDBPlugin;

KContentDeliveryDriver levelDBDriver = 
	new LevelDBPlugin("/opt/kmf_storage");
model = new MyModel(
    DataManagerBuilder.create()
    .withContentDeliveryDriver(levelDBDriver)
    .build()
    );

To have more information about KMF Storage Plugin using, please visit the following tutorial step:

https://github.com/kevoree-modeling/tutorial/tree/master/step2_persistence