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The recommended approach to implement a distributed cache in CloudHub, synchronized for all the workers, is to use the default CloudHub persistent Object Store (Using Object Store V2).TheMulesoft Knowledge Base article describes such solution and provide a sample implementation.

The implementation provided in the article, however, do not support partitions, so if we define multiple caches for different purposes all the entries will be stored in the same default partition.

The PartitionableMonitorObjectStore allows to use a different partition for each cache. This will offer a better experience when you need to search or manually expire a particular key.The image below shows an example of how it will look like in the Runtime Manager console:

• Mule 3.x

As a dependency of your Maven project:

<dependency>   <groupId>com.mariocairone.mule</groupId>   <artifactId>cloudhub-partitionable-objectstore</artifactId>   <version>1.0.0</version></dependency>

You can also build the.jar file yourself, assuming you have Maven and JDK 1.8+ installed:

mvn clean install

The resulting.jar file will be located in thetarget/ folder.

You can also findSNAPSHOT builds of the latest and greatest changes to the master branch in the SonaType snapshots repository.

To add that snapshot repository to your Maven pom.xml use the following snippet:

<repositories>    <repository>        <id>oss-sonatype</id>        <name>oss-sonatype</name>        <url>https://oss.sonatype.org/content/repositories/snapshots/</url>        <snapshots>            <enabled>true</enabled>        </snapshots>    </repository></repositories>

<ee:object-store-caching-strategyname="MyCacheStrategy"doc:name="Caching Strategy"keyGenerationExpression="#[flowVars.cacheKey]"><custom-object-storeclass="com.mariocairone.mule.objectstore.PartitionableMonitorObjectStore"><spring:propertyname="partition"value="MY_PARTITION"/><spring:propertyname="localObjectStore"ref="_defaultUserObjectStore"/><spring:propertyname="entryTTL"value="${cache.entry.ttl}"/><spring:propertyname="maxEntries"value="${cache.max.entries}"/><spring:propertyname="expirationInterval"value="${cache.expiration.interval}"/></custom-object-store></ee:object-store-caching-strategy>