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JSR107 Cache Specification

tag: 0.5

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README.md

JSR107 (JCache)

About

JCache is the API being defined in JSR107. It defines a standard Java Caching API for use by developers and a standard SPI ("Service Provider Interface") for use by implementers.

Releases

12 October 2011: 0.3

Changes in this release:

  • Numerous changes across the spec, TCK and RI
  • Annotations implementations in the RI for Spring and CDI
  • Transactions API finalised

Maven snippet:

<dependency>
  <groupId>javax.cache</groupId>
  <artifactId>cache-api</artifactId>
  <version>0.3</version>
</dependency>

16 August 2011: 0.2

Initial release.

Maven snippet:

<dependency>
  <groupId>javax.cache</groupId>
  <artifactId>cache-api</artifactId>
  <version>0.2</version>
</dependency>

Snapshot Releases

Snapshot releases of jars for binaries, source and javadoc are available.

Download the cache-api from https://oss.sonatype.org/index.html#nexus-search;quick~javax-cache

or use the following Maven snippet:

<repository>
    <id>sonatype-nexus-snapshots</id>
    <name>Sonatype Nexus Snapshots</name>
    <url>https://oss.sonatype.org/content/repositories/snapshots</url>
    <releases>
        <enabled>false</enabled>
    </releases>
    <snapshots>
        <enabled>true</enabled>
    </snapshots>
</repository>

<dependency>
  <groupId>javax.cache</groupId>
  <artifactId>cache-api</artifactId>
  <version>0.2</version>
</dependency>

Javadoc

The JavaDoc is available as a jar with the releases. We also have the latest JavaDoc online.

Specification

The evolving specification is available online on as a Google Doc.

Reference Implementation

The reference implementation ("RI") source is available on GitHub.

This implementation is not meant for production use. For that we would refer you to one of the many open source and commercial implementations of JCache.

The RI is there to ensure that the specification and API works.

For example, some things that we leave out:

  • implementation of transactions.
  • tiered storage. A simple on-heap store is used.
  • replicated or distributed caching

Why did we do this? Because a much greater engineering effort, which gets put into the open source and commercial caches which implement this API, is required to accomplish these things.

Having said that, the RI is Apache 2 and is a correct implementation of the spec. It can be used to create new cache implementations.

Building From Source

Building uses Maven in all modules. Maven 2.2.1 and 3.0.4 have been tested.

See each module's README.md for build instructions.

Testing Implementions of JSR107

The jsr107tck module contains a domain, tests and an implementation-tester. The implementation-tester allows an implementation, packaged as a Maven module, to be specified on the command line and tested. For example a fictional Acme company implementation could be tested as follows:

mvn -Dtest=CacheManagerFactoryTest \
    -Dimplementation-groupId=acme.cache \
    -Dimplementation-artifactId=acme-cache \
    -Dimplementation-version=0.1-SNAPSHOT \
    test

Mailing list

Please join the mailing list if you're interested in using or developing the software: http://groups.google.com/group/jsr107

IRC

We will be using the #jsr107 channel on Freenode for chat.

We also have set up a commit hook which publishes commits to the channel.

Issue tracker

Please log issues to: https://github.com/jsr107/jsr107spec/issues

Contributing

Right now code contribution is limited to the Expert Group, but please feel free to post to the mailing list.

License

The API is available under the JPA license and may be freely used.

The TCK is available under a restricted TCK license although the tests.

The reference implementation is available under an Apache 2 license.

For details please read the license in each source code file.

Contributors

This free, open source software was made possible by the JSR107 Expert Group who put many hours of hard work into it.

Copyright

Copyright (c) JSR107 Expert Group

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